learned reaction vs learned response

learned reaction and learned response both are nouns.

Word	Noun	Adjective	Verb	Adverb
learned reaction	Yes	No	No	No
learned response	Yes	No	No	No

As nouns, learned reaction and learned response are synonyms defined as:

learned reaction and learned response: a reaction that has been acquired by learning

learned reaction (noun)	learned response (noun)
a reaction that has been acquired by learning	a reaction that has been acquired by learning