thrower vs actor

thrower and actor both are nouns.

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

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

thrower: someone who projects something (especially by a rapid motion of the arm)
actor: a person who acts and gets things done

Other hypernyms of thrower include doer, worker.

thrower (noun)	actor (noun)
someone who projects something (especially by a rapid motion of the arm)	a theatrical performer
a craftsman who shapes pottery on a potter's wheel and bakes them in a kiln	a person who acts and gets things done
a person who twists silk or rayon filaments into a thread or yarn