Which international sports tournament is associated with the Webb Ellis Cup?

The Webb Ellis Cup is associated with the Rugby World Cup. It is the ultimate prize awarded to the winner of the Rugby World Cup, which is a men's international rugby union competition. The tournament is contested by national teams from around the world and is held every four years. The Webb Ellis Cup is named after William Webb Ellis, who is often credited with inventing the game of rugby in 1823 when he picked up the ball during a soccer match and ran with it.