This is so freaking interesting, the way language, word meaning and usage changes over time and space (or doesn't).
Your husband and my boyfriend are from the South of England and, like your husband, my boyfriend says, "dinner," as opposed to, "tea." However, he does use, "trousers," and used to be amused at my use of "pants," because to him that means "underpants."
What used to really get him was when I used the term, "fanny pack." Apparently, "fanny" means something very different in our two countries.
EDIT: Added a sentence.