fire-eater vs performing artist

fire-eater and performing artist both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire-eater	Yes	No	No	No
performing artist	Yes	No	No	No

As nouns, performing artist is a hypernym of fire-eater; that is, performing artist is a word with a broader meaning than fire-eater:

fire-eater: a performer who pretends to swallow fire
performing artist: an entertainer who performs a dramatic or musical work for an audience

Other hypernyms of fire-eater include performer.

fire-eater (noun)	performing artist (noun)
a performer who pretends to swallow fire	an entertainer who performs a dramatic or musical work for an audience
a belligerent grouch
a member of a fire department who tries to extinguish fires