memory vs computer hardware

memory and computer hardware both are nouns.

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

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

memory: an electronic memory device
computer hardware: (computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system

Other hypernyms of memory include hardware, memory device, storage device.

memory (noun)	computer hardware (noun)
an electronic memory device	(computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system
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