More Key Words
Commit - Send changed copies of working files to the CVS Server to be merged into the Master Copy.
Add - Placing a new file into the repository.
Diff - Comparing two files and extracting a summary of what was deleted, changed, added.
Patch - Takes the changes listed in a Diff and apply them to a file.
Merge - Patching the master file with the changes in a working copy.
Delta - Each revision is not stored in its entirety. It is stored as a list of changes (Delta's) from the last version.