Combine, also more formally named pocket billiards (mostly around North America) or combine billiards (mostly in The EU and Australia), is a family of cue sports and games played on a pool table having half dozen receptacles called pockets along side rails, into which balls are deposited as being the main goal of having fun with. An obsolete term to get pool is six-pocket.
There are actually hundreds of pool activities. Some of the more famous include eight-ball (and a variant blackball), nine-ball (with different versions tee-ball and seven-ball), instantly pool (14. 1 continuous), one-pocket, plus bank pool.
There are usually hybrid games combining elements of both pool and carom pool, such as American four-ball pool, cowboy pool, and flask pool.
Etymology
Historic print depicting Ervin Phelan's billiard saloon in New york city, January 1, 1859.
The Oxford English Thesaurus states that pool is by and large "any of various different types of billiards for two or more players" but goes up on note that the initially specific meaning of "a game whereby each player uses a cue ball on the distinctive colour to pocket the balls of your other player(s) in the specific order, the winner taking many of the stakes submitted early on of the contest" is already obsolete, and its other specific definitions are especially for games that originate in the country.
In the United Suggests, although the original "pool" game was played for a pocketless carom billiards family table, the term later stuck to new games of pocket billiards as being the sport gained in global recognition, [citation needed] and so outside of the cue sports industry, who has long favored the extra formal term pocket pool, the common name for any sport has remained combine. The OxfordDictionaries. com definition does not even provides the obsolete meaning associated with the print edition and refers to the typical game "using not one but two sets [each] of reasoning better colored and numbered paintballs... with one black ball including a white cue ball" for a table with pockets.
more details
https://en.wikipedia.org/wiki/Pool_(cue_sports)