fire walker vs performer

fire walker and performer both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire walker	Yes	No	No	No
performer	Yes	No	No	No

As nouns, performer is a hypernym of fire walker; that is, performer is a word with a broader meaning than fire walker:

fire walker: someone who walks barefoot on burning coals
performer: an entertainer who performs a dramatic or musical work for an audience

Other hypernyms of fire walker include performing artist.

fire walker (noun)	performer (noun)
someone who walks barefoot on burning coals	an entertainer who performs a dramatic or musical work for an audience