Referee — the official who controls the game in some sports
Forward — an attacking player whose position is near the front of a team in some sports
Goalkeeper — a player whose job is to stop the ball from going into his or her own team’s goal
Substitute — a player who replaces another player in a sports game
Extra time — a set period of time that is added to the end of a sports game, etc., if there is no winner at the end of the normal period
Goal — a frame with a net into which players must kick or hit the ball in order to score a point
Pitch — an area of ground specially prepared and marked for playing a sports game
Net — the frame covered in net that forms the goal
Handball — the offence of touching the ball with your hands
Red card — and some other games) a card shown by the referee to a player who has broken the rules of the game and is not allowed to play for the rest of the game
Yellow card — a card shown by the referee to a player as a warning about bad behaviour
Penalty — a chance to score a goal or point without any defending players, except the goalkeeper, trying to stop it; the goal or point that is given if it is successful. This chance is given because the other team has broken the rules.
Draw — a game in which both teams or players finish with the same number of points
Definition of referee from the Oxford Advanced Learner's Dictionary[