magnetic core vs random access memory

magnetic core and random access memory both are nouns.

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

magnetic core (noun)	random access memory (noun)
(computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories	the most common computer memory which can be used by programs to perform necessary tasks while the computer is on; an integrated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