response vs answer

response and answer both are nouns.

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

As nouns, answer is a hyponym of response; that is, answer is a word with a more specific, narrower meaning than response:

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

As nouns, answer is a hyponym of response; that is, answer is a word with a more specific, narrower meaning than response:

As nouns, response and answer are synonyms defined as:

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

Other synonyms of response include reply.

response (noun)	answer (noun)
a bodily process occurring due to the effect of some antecedent stimulus or agent	a nonverbal reaction
the manner in which an electrical or mechanical device responds to an input signal or a range of input signals	the speech act of replying to a question
the speech act of continuing a conversational exchange	a statement (either spoken or written) that is made to reply to a question or request or criticism or accusation
a statement (either spoken or written) that is made to reply to a question or request or criticism or accusation	a statement that solves a problem or explains how to solve the problem
the manner in which something is greeted	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
a phrase recited or sung by the congregation following a versicle by the priest or minister
a result

response (verb)	answer (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