random-access memory vs magnetic core

random-access memory and magnetic core both are nouns.

Word	Noun	Adjective	Verb	Adverb
random-access memory	Yes	No	No	No
magnetic core	Yes	No	No	No

random-access memory (noun)	magnetic core (noun)
the most common computer memory which can be used by programs to perform necessary tasks while the computer is on; an integrated circuit memory chip allows information to be stored or accessed in any order and all storage locations are equally accessible	(computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories