Arghhhh! LOL I'm sure I will get it eventually. I was just looking at this ending stuff today and it isn't as intuitive as the romantic languages, but possibly because I studied Latin at school.

I am getting slightly confused as to why you would say...

пожнлая женщина

but then the endings change to being thus in the following sentence....

У пожилой женщины седые волосы

Normally I would have expected the endings to follow the subject but this does not appear to be the case here.

I assume it is following the gender & quantity of the thing belonging to the subject in this instance? Maybe....? I'm finding this definitely foreign!