I found the question about the distinction between supper and dinner interesting.
I am aware of the word supper but I just reject it. It's not really a word. In the dark recesses of my thinking, it is just some vulgar profanity of the stupid and lazy and morally bankrupt.
Dinner is the proper, only word. However I have a friend who recently used the word supper to me in casual conversation. He is not unusually stupid or immoral. He's just a guy. And he simply made reference to going home and having supper because, obviously, that is in his background.
I had quite a strong internal reaction to it. I was a bit angry. It was like he suddenly let out a barrage of the n-word.
It's like, Dude! Did you really just say supper to me? DUDE!
Turns out I got a thing about the word supper.