fiddler vs instrumentalist

fiddler and instrumentalist both are nouns.

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

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

Other hypernyms of fiddler include musician, player.

fiddler (noun)	instrumentalist (noun)
a musician who plays the violin	someone who plays a music as a profession
an unskilled person who tries to fix or mend
someone who manipulates in a nervous or unconscious manner