electronic computer vs memory

electronic computer and memory both are nouns.

Word	Noun	Adjective	Verb	Adverb
electronic computer	Yes	No	No	No
memory	Yes	No	No	No

electronic computer (noun)	memory (noun)
a machine for performing calculations automatically	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