magnetic disk vs magnetic disc

magnetic disk and magnetic disc both are nouns.

Word	Noun	Adjective	Verb	Adverb
magnetic disk	Yes	No	No	No
magnetic disc	Yes	No	No	No

As nouns, magnetic disk and magnetic disc are synonyms defined as:

magnetic disk and magnetic disc: (computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored

Other synonyms of magnetic disk include disc, disk.

magnetic disk (noun)	magnetic disc (noun)
(computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored	(computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored