I finally fixed our Office for Mac tags, and I managed to do it without a posse!
Now, the office-for-mac tag has 44 questions, and there are several subtags for the individual programs and Office versions. Feel free to check the new tag wiki. Neat.
What I'd now suggest is creating a few synonyms so that the weird mac and microsoft-office combinations don't pop up again.
I think those would be good to have:
office-for-mac ← mac-office (since a lot of people say "Mac Office" too)
office-for-mac ← office-mac (since Microsoft uses "office:mac" as a short name as well)