I'm looking for an unambiguous word (or expression) for referring to a question and a corresponding answer as a single entity.
The word should express that no more and no less than 1 question and 1 answer is covered, and that they correspond to each other.
The terms "request, response" may be technical jargon but I'm looking for a general word (it may be technical or not).
(In case this should be obvious, please merge this to ELL, I'm not native.)
Best Answer
Exchange or interchange might work in the absence of better words.