retrieval vs memory

retrieval and memory both are nouns.

Word	Noun	Adjective	Verb	Adverb
retrieval	Yes	No	No	No
memory	Yes	No	No	No

As nouns, memory is a hypernym of retrieval; that is, memory is a word with a broader meaning than retrieval:

Other hypernyms of retrieval include remembering.

retrieval (noun)	memory (noun)
the act of regaining or saving something lost (or in danger of becoming lost)	an electronic memory device
the cognitive operation of accessing information in memory	the power of retaining and recalling past experience
(computer science) the operation of accessing information from the computer's memory	the cognitive processes whereby past experience is remembered
	something that is remembered
	the area of cognitive psychology that studies memory processes