headliner vs performing artist

headliner and performing artist both are nouns.

Word	Noun	Adjective	Verb	Adverb
headliner	Yes	No	No	No
performing artist	Yes	No	No	No

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

headliner: a performer who receives prominent billing
performing artist: an entertainer who performs a dramatic or musical work for an audience

Other hypernyms of headliner include performer.

headliner (noun)	performing artist (noun)
a performer who receives prominent billing	an entertainer who performs a dramatic or musical work for an audience