A complete set of cards is called a pack or deck, and the set of cards held at one time by a player during a game is commonly called their hand. A deck of cards may be used for playing a great variety of card games, some of which may also incorporate gambling.

The front (or "face") of each card carries markings that distinguish it from the other cards in the deck and determine its use under the rules of the game being played. The back of each card is identical for all cards in any particular deck, and usually of a single color or formalized design.

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