comedian vs actor

comedian and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
comedian	Yes	No	No	No
actor	Yes	No	No	No

As nouns, actor is a hypernym of comedian; that is, actor is a word with a broader meaning than comedian:

Other hypernyms of comedian include histrion, player, role player, thespian.

comedian (noun)	actor (noun)
a professional performer who tells jokes and performs comical acts	a theatrical performer
an actor in a comedy	a person who acts and gets things done