What is a lookup table?

Question

I just gave a database diagram for a DB I created to our head database person and she put a bunch of notes on it suggesting that I rename certain tables so it is clear they are

Answer 1

Pick your battles, but I'd ask for the person to clarify the naming convention seeing that they've suggested using the same convention for one-to-many and many-to-many relationships. Looks like any foreign key relationship means there's a "lookup" table involved.

If that's the naming convention for other databases, then I wouldn't push my luck.