In association football, diving is an attempt by a player to gain an unfair advantage by falling to the ground and possibly feigning an injury to give the impression that a foul has been committed. Dives are often used to exaggerate the amount of contact present in a challenge. Deciding on whether a player has dived is often very subjective, and one of the most controversial aspects of football discussion. Players do this so they can receive free kicks or penalty kicks, which can provide scoring opportunities, or so the opposing player receives a yellow or red card, giving their own team an advantage. Diving is also known as simulation (the term used by FIFA), Schwalbe (German for swallow), and, in North America (or other sports), flopping.