organ-grinder vs impresario

organ-grinder and impresario both are nouns.

Word	Noun	Adjective	Verb	Adverb
organ-grinder	Yes	No	No	No
impresario	Yes	No	No	No

As nouns, impresario is a hypernym of organ-grinder; that is, impresario is a word with a broader meaning than organ-grinder:

Other hypernyms of organ-grinder include promoter, showman.

organ-grinder (noun)	impresario (noun)
a street musician who plays a hand organ or hurdy-gurdy	a sponsor who books and stages public entertainments