reaction time vs response time

reaction time and response time both are nouns.

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

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

reaction time and response time: the time that elapses between a stimulus and the response to it

Other synonyms of reaction time include latency, latent period.

reaction time (noun)	response time (noun)
the time that elapses between a stimulus and the response to it	the time that elapses between a stimulus and the response to it