The term 'Deck of Cards' refers to a set of playing cards, usually consisting of 52 cards in four suits. A PACK of cards is a complete deck of cards, typically sold in a sealed box. The four suits are typically spades, hearts, diamonds, and clubs. Each suit contains 13 cards, including an Ace, King, Queen, Jack, and numbers 2 through 10. Playing cards have been used for centuries for various games and activities, such as card games, fortune telling, and magic tricks.