Ultimately I do not expect clients (at least, non-technical clients) to understand this stuff. For your technical clients, co-workers, collaborators, and so on, I do expect different.

Your approach of asking for an example of the thing is a tried and true method. It also an opportunity to add value to a client relationship by explaining the pattern, its uses, and caveats, and then only referring to it as that going forward. Even if they still call it the wrong thing.

Good luck.