A lot of time when I want to ask a question on a SE site I'm in a position something along the lines of:
I've got an idea how to solve a problem but it would require a component with specific properties. I don't know if such components are manufactured and haven't been able find anything from the searches that I can think of.
What I want to do is ask "If such a thing exists, what is it called?" so that I can go do my own homework. However questions of that form are generally incorrectly assumed to be a request for a specific part recommendation (which are off topic for reasons I'm not going to dispute).
- Should "what are parts that do X called? questions be on-topic?
- Are there any conventions for how to ask such questions without being mistaken for the other kind of question?