Or at least, that I don’t grasp in the same way other people seem to:
Connotation.
Embarrassment.
Offense. (Being offended by [something]. What makes [something] offensive.)
Apology.
RSVP…. -ing?
The way other people experience these things and react to them, all I can say with confidence is that I do not share their experience and understanding. I don’t get it. Sincerely. Reading the definitions … doesn’t clear things up at all. I think it’s related to that first one, ‘Connotation’ – ie: that these concepts have connotations of which I am not aware and have not yet figured out how to understand. Importantly, connotation itself is on the list, because I don’t really grasp it, either. How do people detect when they should go to these mysterious alternate meanings instead of the definitions of the words, and how do people know what those meanings are? I don’t get it. Never have, really.