rule
An official agreement about how an activity is played.
convention
An unwritten custom that most players follow, like kicking the ball out of bounds when a player is hurt.
etiquette
Polite, respectful behaviour expected in an activity, like being quiet while someone takes a shot in golf.
official
A person who makes sure the rules are followed: a referee, umpire or judge.
self-officiating
Players call their own fouls and lines and are trusted to be honest.
components of a game
The parts every game needs: objective, players, space, equipment, scoring and rules.
fair play
Playing by the rules, respecting everyone, and giving everyone a chance.