Pool differs quite a lot from snooker whereas pool is made of a lone triangle (or diamond) of balls. Snooker has a triangle of 15 (usally) of reds you also have 1 green ball a blue, a yellow, a brown, a pink and a black ball. reds are worth 1 point yellow 2, green 3,brown 4, blue 5, pink 6, black 7. You take turns and a turn ends when you miss a ball (as pool). You have pot a red then nominate a color and back to red, until all reds are potted. Then you have to pot all colors in sequence. the game carries on till the opponent is unable to catch up on points, or the black is potted a final time.
A snooker is when the white cannot get to an object ball directly, and the lowest points scored from a missed ball is 4, but on a higher point color it is the points on that ball.
If a player is losing by more than he can score he must go for snookers or forfeit.