A lot of the time, you're supposed to play to the top of your intelligence, as truthful as possible. But when you're on stage making people laugh, you're still acting. I think it helped me a bunch to go on stage two or three times a week
An actor (alternatively actress for a female; see terminology) is a person portraying a character in a dramatic or comic production; she or he performs in: film, television, theater, or radio,
literally means "one who interprets"; an actor, then, is one who interprets a dramatic character.