duet vs musical organisation

duet and musical organisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
duet	Yes	No	No	No
musical organisation	Yes	No	No	No

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

Other hypernyms of duet include musical group, musical organization.

duet (noun)	musical organisation (noun)
(ballet) a dance for two people (usually a ballerina and a danseur noble)	an organization of musicians who perform together
a musical composition for two performers
a pair who associate with one another
two performers or singers who perform together
two items of the same kind