Nouns

(n)answer, reply, responsea statement (either spoken or written) that is made to reply to a question or request or criticism or accusation“I waited several days for his answer”, “he wrote replies to several of his critics”
(n)reply, responsethe speech act of continuing a conversational exchange“he growled his reply”

Verbs

(v)answer, reply, respondreact verbally“She didn't want to answer”, “answer the question”, “We answered that we would accept the invitation”