a person who acts in stage plays, motion pictures, television broadcasts, etc.

a person who does something; participant.

noun

audience , fan

noun

amateur , artist , barnstormer , bit player , character , clown , comedian , entertainer , extra , foil , ham * , hambone , headliner , idol , impersonator , ingnue , lead , mime , mimic , pantomimist , performer , play-actor , player , soubrette , stand-in , star , stooge * , straight person , thesp , thespian , trouper , understudy , ventriloquist , villain , walk-on , actress , party , artiste , cast , company , diva , doer , emoter , ham , hamfatter , hero , heroine , histrio , ingenue , mummer , participant , personator , portrayer , prompt , role , starlet , supernumerary , tragedian