RAM disk vs random-access memory

RAM disk and random-access memory both are nouns.

Word	Noun	Adjective	Verb	Adverb
RAM disk	Yes	No	No	No
random-access memory	Yes	No	No	No

RAM disk (noun)	random-access memory (noun)
(computer science) a virtual drive that is created by setting aside part of the random-access memory to use as if it were a group of sectors	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