A collection of teams is known as a LEAGUE. A LEAGUE is typically an organized group of teams that compete against each other in a sport or game. It is usually composed of teams from the same geographic area, such as a city or state. Leagues are often divided into divisions based on skill level or age. The teams in a LEAGUE play a set number of games against each other, and the team with the most wins at the end of the season is declared the champion.