The National Football League (NFL) is a professional American football league consisting of 32 teams. It is divided into two conferences: the AFC (American Football Conference) and the NFC (National Football Conference). The NFL season typically runs from September to February, culminating in the championship game known as the Super Bowl. Founded in 1920, the NFL has grown to become one of the most popular sports leagues in the United States. Each team plays 17 regular-season games, and the league features a playoff system that determines which teams compete for the Super Bowl title.