quintet vs musical composition

quintet and musical composition both are nouns.

Word	Noun	Adjective	Verb	Adverb
quintet	Yes	No	No	No
musical composition	Yes	No	No	No

As nouns, musical composition is a hypernym of quintet; that is, musical composition is a word with a broader meaning than quintet:

Other hypernyms of quintet include composition, opus, piece, piece of music.

quintet (noun)	musical composition (noun)
a musical composition for five performers	a musical work that has been created
five people considered as a unit
a set of five similar things considered as a unit
five performers or singers who perform together
the cardinal number that is the sum of four and one