Billiards is a popular game that has been around for centuries. It is played on a table with a CUE stick and balls. The most common forms of billiards are POOL, SNOOKER, CAROM, and masse. POOL is played with 16 balls and a CUE ball, while SNOOKER is played with 22 balls and a CUE ball. CAROM is played with three balls and no CUE ball, and masse is played with a CUE ball and two object balls. CHALK is used to help the CUE stick grip the CUE ball, and rails are used to keep the balls on the table. Mosconi was a famous billiards player who won numerous world championships.