In football, a white card does not exist. The game only recognizes yellow and red cards as disciplinary measures for players. Yellow cards are shown to caution a player for a minor offense, while red cards are given for more serious offenses and result in immediate expulsion from the game. These cards are typically shown by the referee to indicate when a player has committed a violation. The use of cards helps maintain discipline on the field and ensure fair play.
For more information on the rules and regulations of football, you can visit the official website of FIFA (Fédération Internationale de Football Association) – the governing body of the sport: https://www.fifa.com