In the sport of soccer, players can receive a yellow card or a red card from the referee. A yellow card serves as a warning for unsporting behavior, and accumulating two yellow cards results in a red card, leading to ejection from the match. A red card can also be issued directly for severe fouls or misconduct. The disciplinary card system is a vital part of soccer, promoting fair play and regulating player conduct. Players must be aware of their conduct to avoid penalties that could disadvantage their teams.