walk-on vs thespian

walk-on and thespian both are nouns.

Word	Noun	Adjective	Verb	Adverb
walk-on	Yes	Yes	No	No
thespian	Yes	Yes	No	No

As nouns, thespian is a hypernym of walk-on; that is, thespian is a word with a broader meaning than walk-on:

Other hypernyms of walk-on include actor, histrion, player, role player.

walk-on (noun)	thespian (noun)
plays a small part in a dramatic production	a theatrical performer

walk-on (adjective)	thespian (adjective)
not capable of or especially not involving speech or spoken lines	of or relating to drama