memory vs recollection

memory and recollection both are nouns.

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

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

Other hyponyms of memory include anamnesis, remembrance.

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

memory: the cognitive processes whereby past experience is remembered
recollection: the process of remembering (especially the process of recovering information by mental effort)

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

Other hyponyms of memory include reminiscence, engram, memory trace, confabulation, screen memory.

memory (noun)	recollection (noun)
an electronic memory device	the ability to recall past occurrences
the power of retaining and recalling past experience	the process of remembering (especially the process of recovering information by mental effort)
the cognitive processes whereby past experience is remembered	something recalled to the mind
something that is remembered
the area of cognitive psychology that studies memory processes