diff --git a/src/tools/clangbackend/ipcsource/clangcodemodelserver.cpp b/src/tools/clangbackend/ipcsource/clangcodemodelserver.cpp
index 2eb8ce6b113..c032435d795 100644
--- a/src/tools/clangbackend/ipcsource/clangcodemodelserver.cpp
+++ b/src/tools/clangbackend/ipcsource/clangcodemodelserver.cpp
@@ -95,7 +95,7 @@ ClangCodeModelServer::ClangCodeModelServer()
     QObject::connect(documents.clangFileSystemWatcher(),
                      &ClangFileSystemWatcher::fileChanged,
                      [this](const Utf8String &filePath) {
-        ClangCodeModelServer::startDocumentAnnotationsTimerIfFileIsNotATranslationUnit(filePath);
+        ClangCodeModelServer::startDocumentAnnotationsTimerIfFileIsNotOpenAsDocument(filePath);
     });
 }
 
@@ -136,7 +136,7 @@ void ClangCodeModelServer::updateTranslationUnitsForEditor(const UpdateTranslati
         }
     } catch (const ProjectPartDoNotExistException &exception) {
         client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
-    } catch (const TranslationUnitDoesNotExistException &exception) {
+    } catch (const DocumentDoesNotExistException &exception) {
         client()->translationUnitDoesNotExist(TranslationUnitDoesNotExistMessage(exception.fileContainer()));
     } catch (const std::exception &exception) {
         qWarning() << "Error in ClangCodeModelServer::updateTranslationUnitsForEditor:" << exception.what();
@@ -150,7 +150,7 @@ void ClangCodeModelServer::unregisterTranslationUnitsForEditor(const ClangBackEn
     try {
         documents.remove(message.fileContainers());
         unsavedFiles.remove(message.fileContainers());
-    } catch (const TranslationUnitDoesNotExistException &exception) {
+    } catch (const DocumentDoesNotExistException &exception) {
         client()->translationUnitDoesNotExist(TranslationUnitDoesNotExistMessage(exception.fileContainer()));
     } catch (const ProjectPartDoNotExistException &exception) {
         client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
@@ -209,7 +209,7 @@ void ClangCodeModelServer::unregisterUnsavedFilesForEditor(const UnregisterUnsav
     try {
         unsavedFiles.remove(message.fileContainers());
         documents.updateDocumentsWithChangedDependencies(message.fileContainers());
-    } catch (const TranslationUnitDoesNotExistException &exception) {
+    } catch (const DocumentDoesNotExistException &exception) {
         client()->translationUnitDoesNotExist(TranslationUnitDoesNotExistMessage(exception.fileContainer()));
     } catch (const ProjectPartDoNotExistException &exception) {
         client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
@@ -232,7 +232,7 @@ void ClangCodeModelServer::completeCode(const ClangBackEnd::CompleteCodeMessage
 
         jobs().add(jobRequest);
         jobs().process();
-    } catch (const TranslationUnitDoesNotExistException &exception) {
+    } catch (const DocumentDoesNotExistException &exception) {
         client()->translationUnitDoesNotExist(TranslationUnitDoesNotExistMessage(exception.fileContainer()));
     } catch (const ProjectPartDoNotExistException &exception) {
         client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
@@ -254,7 +254,7 @@ void ClangCodeModelServer::requestDocumentAnnotations(const RequestDocumentAnnot
 
         jobs().add(jobRequest);
         jobs().process();
-    } catch (const TranslationUnitDoesNotExistException &exception) {
+    } catch (const DocumentDoesNotExistException &exception) {
         client()->translationUnitDoesNotExist(TranslationUnitDoesNotExistMessage(exception.fileContainer()));
     } catch (const ProjectPartDoNotExistException &exception) {
         client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
@@ -281,7 +281,7 @@ const Documents &ClangCodeModelServer::documentsForTestOnly() const
     return documents;
 }
 
-void ClangCodeModelServer::startDocumentAnnotationsTimerIfFileIsNotATranslationUnit(const Utf8String &filePath)
+void ClangCodeModelServer::startDocumentAnnotationsTimerIfFileIsNotOpenAsDocument(const Utf8String &filePath)
 {
     if (!documents.hasDocumentWithFilePath(filePath))
         updateDocumentAnnotationsTimer.start(0);
diff --git a/src/tools/clangbackend/ipcsource/clangcodemodelserver.h b/src/tools/clangbackend/ipcsource/clangcodemodelserver.h
index 8fb481eebc1..ff0db141f9c 100644
--- a/src/tools/clangbackend/ipcsource/clangcodemodelserver.h
+++ b/src/tools/clangbackend/ipcsource/clangcodemodelserver.h
@@ -67,7 +67,7 @@ public /*for tests*/:
 private:
     Jobs &jobs();
 
-    void startDocumentAnnotationsTimerIfFileIsNotATranslationUnit(const Utf8String &filePath);
+    void startDocumentAnnotationsTimerIfFileIsNotOpenAsDocument(const Utf8String &filePath);
     void addJobRequestsForDirtyAndVisibleDocuments();
     void processJobsForDirtyAndVisibleDocuments();
     void processInitialJobsForDocuments(const std::vector<Document> &documents);
diff --git a/src/tools/clangbackend/ipcsource/clangdocument.cpp b/src/tools/clangbackend/ipcsource/clangdocument.cpp
index e994c62f8aa..2d4d1eac7fa 100644
--- a/src/tools/clangbackend/ipcsource/clangdocument.cpp
+++ b/src/tools/clangbackend/ipcsource/clangdocument.cpp
@@ -359,13 +359,13 @@ void Document::setDirty()
 void Document::checkIfNull() const
 {
     if (isNull())
-        throw TranslationUnitIsNullException();
+        throw DocumentIsNullException();
 }
 
 void Document::checkIfFileExists() const
 {
     if (!fileExists())
-        throw TranslationUnitFileNotExitsException(d->filePath);
+        throw DocumentFileDoesNotExistException(d->filePath);
 }
 
 bool Document::fileExists() const
diff --git a/src/tools/clangbackend/ipcsource/clangdocuments.cpp b/src/tools/clangbackend/ipcsource/clangdocuments.cpp
index d571c7de37f..e0d04453214 100644
--- a/src/tools/clangbackend/ipcsource/clangdocuments.cpp
+++ b/src/tools/clangbackend/ipcsource/clangdocuments.cpp
@@ -116,7 +116,7 @@ const Document &Documents::document(const Utf8String &filePath, const Utf8String
     auto findIterator = findDocument(filePath, projectPartId);
 
     if (findIterator == documents_.end())
-        throw TranslationUnitDoesNotExistException(FileContainer(filePath, projectPartId));
+        throw DocumentDoesNotExistException(FileContainer(filePath, projectPartId));
 
     return *findIterator;
 }
@@ -169,10 +169,10 @@ QVector<FileContainer> Documents::newerFileContainers(const QVector<FileContaine
 {
     QVector<FileContainer> newerContainers;
 
-    auto translationUnitIsNewer = [this] (const FileContainer &fileContainer) {
+    auto documentIsNewer = [this] (const FileContainer &fileContainer) {
         try {
             return document(fileContainer).documentRevision() != fileContainer.documentRevision();
-        } catch (const TranslationUnitDoesNotExistException &) {
+        } catch (const DocumentDoesNotExistException &) {
             return true;
         }
     };
@@ -180,7 +180,7 @@ QVector<FileContainer> Documents::newerFileContainers(const QVector<FileContaine
     std::copy_if(fileContainers.cbegin(),
                  fileContainers.cend(),
                  std::back_inserter(newerContainers),
-                 translationUnitIsNewer);
+                 documentIsNewer);
 
     return newerContainers;
 }
@@ -280,7 +280,7 @@ void Documents::checkIfDocumentsDoNotExist(const QVector<FileContainer> &fileCon
 {
     for (const FileContainer &fileContainer : fileContainers) {
         if (hasDocument(fileContainer))
-            throw  TranslationUnitAlreadyExistsException(fileContainer);
+            throw DocumentAlreadyExistsException(fileContainer);
     }
 }
 
@@ -288,7 +288,7 @@ void Documents::checkIfDocumentsForFilePathsExist(const QVector<FileContainer> &
 {
     for (const FileContainer &fileContainer : fileContainers) {
         if (!hasDocumentWithFilePath(fileContainer.filePath()))
-            throw  TranslationUnitDoesNotExistException(fileContainer);
+            throw DocumentDoesNotExistException(fileContainer);
     }
 }
 
@@ -303,7 +303,7 @@ void Documents::removeDocuments(const QVector<FileContainer> &fileContainers)
     documents_.erase(removeBeginIterator, documents_.end());
 
     if (!processedFileContainers.isEmpty())
-        throw TranslationUnitDoesNotExistException(processedFileContainers.first());
+        throw DocumentDoesNotExistException(processedFileContainers.first());
 }
 
 } // namespace ClangBackEnd
diff --git a/src/tools/clangbackend/ipcsource/clangexceptions.cpp b/src/tools/clangbackend/ipcsource/clangexceptions.cpp
index 5c22ad4c2f5..2dc9cff8eb3 100644
--- a/src/tools/clangbackend/ipcsource/clangexceptions.cpp
+++ b/src/tools/clangbackend/ipcsource/clangexceptions.cpp
@@ -48,25 +48,25 @@ const char *ProjectPartDoNotExistException::what() const Q_DECL_NOEXCEPT
     return what_.constData();
 }
 
-TranslationUnitAlreadyExistsException::TranslationUnitAlreadyExistsException(
+DocumentAlreadyExistsException::DocumentAlreadyExistsException(
         const FileContainer &fileContainer)
     : fileContainer_(fileContainer)
 {
 }
 
-TranslationUnitAlreadyExistsException::TranslationUnitAlreadyExistsException(
+DocumentAlreadyExistsException::DocumentAlreadyExistsException(
         const Utf8String &filePath,
         const Utf8String &projectPartId)
     : fileContainer_(filePath, projectPartId)
 {
 }
 
-const FileContainer &TranslationUnitAlreadyExistsException::fileContainer() const
+const FileContainer &DocumentAlreadyExistsException::fileContainer() const
 {
     return fileContainer_;
 }
 
-const char *TranslationUnitAlreadyExistsException::what() const Q_DECL_NOEXCEPT
+const char *DocumentAlreadyExistsException::what() const Q_DECL_NOEXCEPT
 {
     if (what_.isEmpty()) {
         what_ += Utf8StringLiteral("Translation unit '")
@@ -79,25 +79,25 @@ const char *TranslationUnitAlreadyExistsException::what() const Q_DECL_NOEXCEPT
     return what_.constData();
 }
 
-TranslationUnitDoesNotExistException::TranslationUnitDoesNotExistException(
+DocumentDoesNotExistException::DocumentDoesNotExistException(
         const FileContainer &fileContainer)
     : fileContainer_(fileContainer)
 {
 }
 
-TranslationUnitDoesNotExistException::TranslationUnitDoesNotExistException(
+DocumentDoesNotExistException::DocumentDoesNotExistException(
         const Utf8String &filePath,
         const Utf8String &projectPartId)
     : fileContainer_(filePath, projectPartId)
 {
 }
 
-const FileContainer &TranslationUnitDoesNotExistException::fileContainer() const
+const FileContainer &DocumentDoesNotExistException::fileContainer() const
 {
     return fileContainer_;
 }
 
-const char *TranslationUnitDoesNotExistException::what() const Q_DECL_NOEXCEPT
+const char *DocumentDoesNotExistException::what() const Q_DECL_NOEXCEPT
 {
     if (what_.isEmpty())
         what_ += Utf8StringLiteral("Translation unit '")
@@ -109,18 +109,18 @@ const char *TranslationUnitDoesNotExistException::what() const Q_DECL_NOEXCEPT
     return what_.constData();
 }
 
-TranslationUnitFileNotExitsException::TranslationUnitFileNotExitsException(
+DocumentFileDoesNotExistException::DocumentFileDoesNotExistException(
         const Utf8String &filePath)
     : filePath_(filePath)
 {
 }
 
-const Utf8String &TranslationUnitFileNotExitsException::filePath() const
+const Utf8String &DocumentFileDoesNotExistException::filePath() const
 {
     return filePath_;
 }
 
-const char *TranslationUnitFileNotExitsException::what() const Q_DECL_NOEXCEPT
+const char *DocumentFileDoesNotExistException::what() const Q_DECL_NOEXCEPT
 {
     if (what_.isEmpty())
         what_ += Utf8StringLiteral("File ")
@@ -130,7 +130,7 @@ const char *TranslationUnitFileNotExitsException::what() const Q_DECL_NOEXCEPT
     return what_.constData();
 }
 
-const char *TranslationUnitIsNullException::what() const Q_DECL_NOEXCEPT
+const char *DocumentIsNullException::what() const Q_DECL_NOEXCEPT
 {
     return "Tried to access a null TranslationUnit!";
 }
diff --git a/src/tools/clangbackend/ipcsource/clangexceptions.h b/src/tools/clangbackend/ipcsource/clangexceptions.h
index 00ded5b20c3..8c5fa49925d 100644
--- a/src/tools/clangbackend/ipcsource/clangexceptions.h
+++ b/src/tools/clangbackend/ipcsource/clangexceptions.h
@@ -49,12 +49,12 @@ private:
     mutable Utf8String what_;
 };
 
-class TranslationUnitAlreadyExistsException : public std::exception
+class DocumentAlreadyExistsException : public std::exception
 {
 public:
-    TranslationUnitAlreadyExistsException(const FileContainer &fileContainer);
-    TranslationUnitAlreadyExistsException(const Utf8String &filePath,
-                                          const Utf8String &projectPartId);
+    DocumentAlreadyExistsException(const FileContainer &fileContainer);
+    DocumentAlreadyExistsException(const Utf8String &filePath,
+                                   const Utf8String &projectPartId);
 
     const FileContainer &fileContainer() const;
 
@@ -65,12 +65,12 @@ private:
     mutable Utf8String what_;
 };
 
-class TranslationUnitDoesNotExistException : public std::exception
+class DocumentDoesNotExistException : public std::exception
 {
 public:
-    TranslationUnitDoesNotExistException(const FileContainer &fileContainer);
-    TranslationUnitDoesNotExistException(const Utf8String &filePath,
-                                         const Utf8String &projectPartId);
+    DocumentDoesNotExistException(const FileContainer &fileContainer);
+    DocumentDoesNotExistException(const Utf8String &filePath,
+                                  const Utf8String &projectPartId);
 
     const FileContainer &fileContainer() const;
 
@@ -81,10 +81,10 @@ private:
     mutable Utf8String what_;
 };
 
-class TranslationUnitFileNotExitsException : public std::exception
+class DocumentFileDoesNotExistException : public std::exception
 {
 public:
-    TranslationUnitFileNotExitsException(const Utf8String &filePath);
+    DocumentFileDoesNotExistException(const Utf8String &filePath);
 
     const Utf8String &filePath() const;
 
@@ -95,7 +95,7 @@ private:
     mutable Utf8String what_;
 };
 
-class TranslationUnitIsNullException : public std::exception
+class DocumentIsNullException : public std::exception
 {
 public:
     const char *what() const Q_DECL_NOEXCEPT override;
diff --git a/src/tools/clangbackend/ipcsource/clangjobcontext.cpp b/src/tools/clangbackend/ipcsource/clangjobcontext.cpp
index f09235ca329..e0eb444a94e 100644
--- a/src/tools/clangbackend/ipcsource/clangjobcontext.cpp
+++ b/src/tools/clangbackend/ipcsource/clangjobcontext.cpp
@@ -52,13 +52,11 @@ bool JobContext::isOutdated() const
 
 bool JobContext::isDocumentOpen() const
 {
-    const bool hasTranslationUnit
-            = documents->hasDocument(jobRequest.filePath, jobRequest.projectPartId);
-
-    if (!hasTranslationUnit)
+    const bool hasDocument = documents->hasDocument(jobRequest.filePath, jobRequest.projectPartId);
+    if (!hasDocument)
         qCDebug(jobsLog) << "Document already closed for results of" << jobRequest;
 
-    return hasTranslationUnit;
+    return hasDocument;
 }
 
 bool JobContext::documentRevisionChanged() const
diff --git a/tests/unit/unittest/clangdocumentstest.cpp b/tests/unit/unittest/clangdocumentstest.cpp
index 017f2ffadc6..6889c7dea03 100644
--- a/tests/unit/unittest/clangdocumentstest.cpp
+++ b/tests/unit/unittest/clangdocumentstest.cpp
@@ -87,7 +87,7 @@ protected:
 TEST_F(Documents, ThrowForGettingWithWrongFilePath)
 {
     ASSERT_THROW(documents.document(nonExistingFilePath, projectPartId),
-                 ClangBackEnd::TranslationUnitDoesNotExistException);
+                 ClangBackEnd::DocumentDoesNotExistException);
 
 }
 
@@ -103,7 +103,7 @@ TEST_F(Documents, ThrowForAddingNonExistingFile)
     ClangBackEnd::FileContainer fileContainer(nonExistingFilePath, projectPartId);
 
     ASSERT_THROW(documents.create({fileContainer}),
-                 ClangBackEnd::TranslationUnitFileNotExitsException);
+                 ClangBackEnd::DocumentFileDoesNotExistException);
 }
 
 TEST_F(Documents, DoNotThrowForAddingNonExistingFileWithUnsavedContent)
@@ -139,14 +139,14 @@ TEST_F(Documents, ThrowForCreatingAnExistingDocument)
     documents.create({fileContainer});
 
     ASSERT_THROW(documents.create({fileContainer}),
-                 ClangBackEnd::TranslationUnitAlreadyExistsException);
+                 ClangBackEnd::DocumentAlreadyExistsException);
 }
 
 TEST_F(Documents, ThrowForUpdatingANonExistingDocument)
 {
     ClangBackEnd::FileContainer fileContainer(filePath, projectPartId, Utf8StringVector(), 74u);
     ASSERT_THROW(documents.update({fileContainer}),
-                 ClangBackEnd::TranslationUnitDoesNotExistException);
+                 ClangBackEnd::DocumentDoesNotExistException);
 }
 
 TEST_F(Documents, UpdateSingle)
@@ -230,7 +230,7 @@ TEST_F(Documents, ThrowForRemovingWithWrongFilePath)
     ClangBackEnd::FileContainer fileContainer(nonExistingFilePath, projectPartId);
 
     ASSERT_THROW(documents.remove({fileContainer}),
-                 ClangBackEnd::TranslationUnitDoesNotExistException);
+                 ClangBackEnd::DocumentDoesNotExistException);
 }
 
 TEST_F(Documents, ThrowForRemovingWithWrongProjectPartFilePath)
@@ -249,7 +249,7 @@ TEST_F(Documents, Remove)
     documents.remove({fileContainer});
 
     ASSERT_THROW(documents.document(filePath, projectPartId),
-                 ClangBackEnd::TranslationUnitDoesNotExistException);
+                 ClangBackEnd::DocumentDoesNotExistException);
 }
 
 TEST_F(Documents, RemoveAllValidIfExceptionIsThrown)
@@ -258,7 +258,7 @@ TEST_F(Documents, RemoveAllValidIfExceptionIsThrown)
     documents.create({fileContainer});
 
     ASSERT_THROW(documents.remove({ClangBackEnd::FileContainer(Utf8StringLiteral("dontextist.pro"), projectPartId), fileContainer}),
-                 ClangBackEnd::TranslationUnitDoesNotExistException);
+                 ClangBackEnd::DocumentDoesNotExistException);
 
     ASSERT_THAT(documents.documents(),
                 Not(Contains(Document(filePath,
diff --git a/tests/unit/unittest/clangdocumenttest.cpp b/tests/unit/unittest/clangdocumenttest.cpp
index b3c4745b695..5817541a664 100644
--- a/tests/unit/unittest/clangdocumenttest.cpp
+++ b/tests/unit/unittest/clangdocumenttest.cpp
@@ -104,7 +104,7 @@ TEST_F(Document, DefaultDocumentIsNotIntact)
 TEST_F(Document, ThrowExceptionForNonExistingFilePath)
 {
     ASSERT_THROW(::Document(Utf8StringLiteral("file.cpp"), projectPart, Utf8StringVector(), documents),
-                 ClangBackEnd::TranslationUnitFileNotExitsException);
+                 ClangBackEnd::DocumentFileDoesNotExistException);
 }
 
 TEST_F(Document, ThrowNoExceptionForNonExistingFilePathIfDoNotCheckIfFileExistsIsSet)
@@ -122,14 +122,14 @@ TEST_F(Document, ThrowExceptionForGettingIndexForInvalidUnit)
 {
     ::Document document;
 
-    ASSERT_THROW(document.translationUnit().cxIndex(), ClangBackEnd::TranslationUnitIsNullException);
+    ASSERT_THROW(document.translationUnit().cxIndex(), ClangBackEnd::DocumentIsNullException);
 }
 
 TEST_F(Document, ThrowExceptionForGettingCxTranslationUnitForInvalidUnit)
 {
     ::Document document;
 
-    ASSERT_THROW(document.translationUnit().cxIndex(), ClangBackEnd::TranslationUnitIsNullException);
+    ASSERT_THROW(document.translationUnit().cxIndex(), ClangBackEnd::DocumentIsNullException);
 }
 
 TEST_F(Document, CxTranslationUnitGetterIsNonNullForParsedUnit)
@@ -143,7 +143,7 @@ TEST_F(Document, ThrowExceptionIfGettingFilePathForNullUnit)
 {
    ::Document document;
 
-    ASSERT_THROW(document.filePath(), ClangBackEnd::TranslationUnitIsNullException);
+    ASSERT_THROW(document.filePath(), ClangBackEnd::DocumentIsNullException);
 }
 
 TEST_F(Document, ResettedDocumentIsNull)