supernumerary vs histrion

supernumerary and histrion both are nouns.

Word	Noun	Adjective	Verb	Adverb
supernumerary	Yes	Yes	No	No
histrion	Yes	No	No	No

As nouns, histrion is a hypernym of supernumerary; that is, histrion is a word with a broader meaning than supernumerary:

Other hypernyms of supernumerary include actor, player, role player, thespian.

supernumerary (noun)	histrion (noun)
a minor actor in crowd scenes	a theatrical performer
a person serving no apparent function

supernumerary (adjective)	histrion (adjective)
more than is needed, desired, or required