Window?

Walking back from the post office (part of the post Christmas exercise regime) I passed 3 parked landrovers.

This one made me question when is a window not a window? Is it the frame? Is is what fills the frame? And is it a window when it is full of holes?

I didn’t resolve any of these issues but headed home to spend 5 hours clearing out, searching for papers and tidying up. Then hospital radio. Felt to be a constructive day.