actor, act or

Actor or actor ( one word ) means someone who plays a part; someone who performs in a show, movie, film, or play--
He wants to be an actor, and plans to move to Hollywood.
He saw a famous actor, and asked for his autograph.
Actor may also mean someone who does something; a participant--
Each actor will have to follow the official rules.

Act or or act or ( two words ) means to perform or do ( act ), as one of two alternatives ( or ) --
Is he going to act or just stand there?
Does he act or does he sing?
Act or ( two words ) may also mean a performance or part of a performance, or a deed or action ( act ), as one of two alternatives ( or ) --
Is this an act or is he sincere?
Should we finish the act or quit now?

Now that you know that, you can say--
"He rarely finds work as an actor, so it's act or wait tables."

Note--the plural ( more than one ) of "actor" is "actors"--
The actors are in costume, ready for the show.
Note # 2--the third person singular ( he, she, it ) form of "act", meaning to perform, is "acts"--
Is it the way he acts or the way he talks that annoys you?
Note # 3--the plural ( more than one ) of "act", meaning a performance, is "acts"--
Are these acts or are these people for real?