answer vs response

answer and response both are nouns.

Word	Noun	Adjective	Verb	Adverb
answer	Yes	No	Yes	No
response	Yes	No	No	No

As nouns, response is a hypernym of answer; that is, response is a word with a broader meaning than answer:

answer: a nonverbal reaction
response: a bodily process occurring due to the effect of some antecedent stimulus or agent

Other hypernyms of answer include reaction.

As nouns, response is a hypernym of answer; that is, response is a word with a broader meaning than answer:

Other hypernyms of answer include reply.

As nouns, answer and response are synonyms defined as:

answer and response: a statement (either spoken or written) that is made to reply to a question or request or criticism or accusation

Other synonyms of answer include reply.

answer (noun)	response (noun)
a nonverbal reaction	a bodily process occurring due to the effect of some antecedent stimulus or agent
the speech act of replying to a question	the manner in which an electrical or mechanical device responds to an input signal or a range of input signals
a statement (either spoken or written) that is made to reply to a question or request or criticism or accusation	the speech act of continuing a conversational exchange
a statement that solves a problem or explains how to solve the problem	a statement (either spoken or written) that is made to reply to a question or request or criticism or accusation
the principal pleading by the defendant in response to plaintiff's complaint; in criminal law it consists of the defendant's plea of `guilty' or `not guilty' (or nolo contendere); in civil law it must contain denials of all allegations in the plaintiff's complaint that the defendant hopes to controvert and it can contain affirmative defenses or counterclaims	the manner in which something is greeted
	a phrase recited or sung by the congregation following a versicle by the priest or minister
	a result

answer (verb)	response (verb)
give the correct answer or solution to
respond to a signal
understand the meaning of
react to a stimulus or command
react verbally
give a defence or refutation of (a charge) or in (an argument)
be satisfactory for; meet the requirements of or serve the purpose of
match or correspond
be liable or accountable
be sufficient; be adequate, either in quality or quantity