jdw3018 wroteWho doesn't know what you mean when you say endline? Do people really not know?
I'm sure they could figure it out. It's not rocket science. But everyone but officials uses the term baseline.
Again if I'm talking with officials, then I'll speak like an official. That means using end line, division line, try, habitual motion rather than the terms players/coaches/fans use like baseline, half court line, shot, etc.