8-ball pool, 9-ball pool, snooker, one pocket, balkline are all cue sports games. They all share a rectangular cloth-covered table, a long cue stick, a set of balls and an ambition to score, but they differ in their rules, objects, and even their terminology.

Generally, billiard games divide into two types: pocket billiard games and carom billiard games. Pocket billiard games, usually referred to as pool games, are the type of billiard played on a table that has six pockets. In pocket billiard games, the players aspire to sink the balls into the table pockets, according to specific games rules.

Carom billiard games, on the other hand, are played on pocketless tables. Only three billiard balls are involved in the carom games. The purpose of the players in most carom games is to maneuver their cue ball so it will carom off the other two balls, again, according to the specific requirements of the game.

8-ball pool is a pocket billiard game. Other popular pocket billiard games include 9-ball pool, 14.1 continuous (formerly known as straight pool) and even snooker. Snooker is the most popular cue sports in the UK. Even though snooker is played on a pocketed pool table, it is not governed by the same association that administrates pocket billiard rules. Therefore, pocket billiard general rules do not apply to snooker.

The equipment used in snooker games is also different from the one used in pocket billiard tournaments. For example, the snooker table is a bit larger than the standard pool table plus its pockets are narrower. The terminology used in both billiard games is different as well. While pool players' goal is to "pocket" the "object balls", snooker players aim to "pot" the "red" or the "on-ball".