computer memory vs memory board

computer memory and memory board both are nouns.

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

As nouns, computer memory and memory board are synonyms defined as:

Other synonyms of computer memory include computer storage, memory, storage, store.

computer memory (noun)	memory board (noun)
an electronic memory device	an electronic memory device