A card deck is a collection of playing cards used for various games and activities. Typically, a standard deck consists of 52 cards divided into four suits: hearts, diamonds, clubs, and spades. Each suit contains cards numbered from 2 to 10, along with face cards like jack, queen, and king, plus an ace. Card decks can also include additional cards, such as jokers, which are often used in specific games. They are used in a wide range of games, from classic ones like poker and bridge to modern card games. Card decks can be made from paper, plastic, or other materials.