role

the actions and activities assigned to or required or expected of a person or group; "the function of a teacher"; "the government must do its part"; "play its role"

an actor's portrayal of someone in a play; "she played the part of Desdemona"

what something is used for; "the function of an auger is to bore holes"; "ballet is beautiful but what use is it?"

normal or customary activity of a person in a particular social setting; "what is your role on the team?"