PC Word - and I don't mean "computer"

I recently used the word housewife in a translation. (The German was Hausfrau; it seemed the obvious thing to do.) 

I was surprised to find the Word grammar checker underlined it and suggested homemaker instead.  I see where it's coming from, but still - grammar checker?

I started wondering what other terms Word would caution me against?

It seems the following words are dangerous: lady (suggestions: woman, person), chairman (chair, chairperson), and actress (actor).

On the other hand, authoress, seamstress, fireman, and (sorry about this, but I needed to know) nigger - are waved through with a big paperclippy grin.  If I thought there was a mind behind this, I'd be very, very disturbed.

Language = UK English, BTW.