acetate disk vs disc

acetate disk and disc both are nouns.

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

As nouns, disc is a hypernym of acetate disk; that is, disc is a word with a broader meaning than acetate disk:

Other hypernyms of acetate disk include disk.

acetate disk (noun)	disc (noun)
a disk coated with cellulose acetate	a flat circular plate
	sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove
	(computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored
	something with a round shape resembling a flat circular plate