A card deck is a collection of playing cards used for various games and activities. The standard deck typically contains 52 cards, divided into four suits: hearts, diamonds, clubs, and spades. Each suit has 13 ranks, including numbered cards from 2 to 10, and face cards like jack, queen, and king. Some decks also include a couple of joker cards, which can be used as wild cards in certain games. Card decks are versatile and can be used for a wide range of games, from classic ones like poker and bridge to more casual games like Go Fish and Uno. They can also be used for magic tricks, cardistry, and even educational purposes. Different cultures may have unique decks, such as Tarot cards, which are used for divination and storytelling.