jazzman vs instrumentalist

jazzman and instrumentalist both are nouns.

Word	Noun	Adjective	Verb	Adverb
jazzman	Yes	No	No	No
instrumentalist	Yes	No	No	No

As nouns, instrumentalist is a hypernym of jazzman; that is, instrumentalist is a word with a broader meaning than jazzman:

Other hypernyms of jazzman include musician, player.

jazzman (noun)	instrumentalist (noun)
a musician who plays or composes jazz music	someone who plays a music as a profession