response time vs latency

response time and latency both are nouns.

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

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

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

Other synonyms of response time include latent period, reaction time.

response time (noun)	latency (noun)
the time that elapses between a stimulus and the response to it	the state of being not yet evident or active
	the time that elapses between a stimulus and the response to it
	(computer science) the time it takes for a specific block of data on a data track to rotate around to the read/write head