compact disc vs CD

compact disc and CD both are nouns.

Word	Noun	Adjective	Verb	Adverb
compact disc	Yes	No	No	No
CD	Yes	No	No	No

As nouns, compact disc and CD are synonyms defined as:

compact disc and CD: a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser

Other synonyms of compact disc include compact disk.

compact disc (noun)	CD (noun)
a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser	a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser
	a debt instrument issued by a bank; usually pays interest