"diff [verb]" ""
"fast forward merge" "A fast-forward is a special type of merge where you have a revision and you are merging another branch's changes that happen to be a descendant of what you have."
"fetch" "Fetching a branch means to get the branch's head from a remote repository, to find out which objects are missing from the local object database, and to get them, too."
+"hunk" "One context of consecutive lines in a whole patch, which consists of many such hunks"
"index (in git-gui: staging area)" "A collection of files. The index is a stored version of your working tree."
"merge [noun]" "A successful merge results in the creation of a new commit representing the result of the merge."
"merge [verb]" "To bring the contents of another branch into the current branch."