For what features (which Apple Pages lacks) do you need or prefer Microsoft Word for Mac?

At this very moment, I am using Microsoft Word for Mac to create a perfectly compatible document for my Dad (you know, with all the great stuff like in-table text-boxes which Apple Pages really lacks support for). Well, I can’t help but swear and think that software is gruesome, slow and anything but integrated to the OS. So, this question’s for the ones who know well both Apple Pages and MS Word for Mac. What are those mysterious features that make MS Word a priceless piece of software and should make me throw Apple Pages away?