explain, expound, explicate, elucidate, interpret mean to make something clear or understandable. explain implies a making plain or intelligible what is not immediately obvious or entirely known.
Explain, elucidate, expound, interpret imply making the meaning of something clear or understandable. To explain is to make plain, clear, or intelligible something that is not known or understood: to explain a theory or a problem.
Forbes: The AI Conscience: Leading Ethical Decision-Making In The Artificial Intelligence Age