engram vs memory

engram and memory both are nouns.

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

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

engram: a postulated biochemical change (presumably in neural tissue) that represents a memory
memory: something that is remembered

engram (noun)	memory (noun)
a postulated biochemical change (presumably in neural tissue) that represents a memory	an electronic memory device
	the power of retaining and recalling past experience
	the cognitive processes whereby past experience is remembered
	something that is remembered
	the area of cognitive psychology that studies memory processes