memory vs confabulation

memory and confabulation both are nouns.

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

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

memory: something that is remembered
confabulation: (psychiatry) a plausible but imagined memory that fills in gaps in what is remembered

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

memory (noun)	confabulation (noun)
an electronic memory device	(psychiatry) a plausible but imagined memory that fills in gaps in what is remembered
the power of retaining and recalling past experience	an informal conversation
the cognitive processes whereby past experience is remembered
something that is remembered
the area of cognitive psychology that studies memory processes