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.