Nouns

(n)player, participanta person who participates in or is skilled at some game
(n)musician, instrumentalist, playersomeone who plays a music as a profession
(n)actor, histrion, player, thespian, role playera theatrical performer
(n)playera person who pursues a number of different social and sexual partners simultaneously
(n)participant, playersomeone who takes part in an activity“he was a major player in setting up the corporation”