realist vs actor

realist and actor both are nouns.

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

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

realist: a person who accepts the world as it literally is and deals with it accordingly
actor: a person who acts and gets things done

Other hypernyms of realist include doer, worker.

realist (noun)	actor (noun)
a philosopher who believes that universals are real and exist independently of anyone thinking of them	a theatrical performer
a painter who represents the world realistically and not in an idealized or romantic style	a person who acts and gets things done
a person who accepts the world as it literally is and deals with it accordingly