string quintet vs quintet

string quintet and quintet both are nouns.

Word	Noun	Adjective	Verb	Adverb
string quintet	Yes	No	No	No
quintet	Yes	No	No	No

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

Other hypernyms of string quintet include quintette.

string quintet (noun)	quintet (noun)
a group of five string players.	a musical composition for five performers
	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