A playing card is a typically hand-sized piece of heavy paper or thin plastic used for playing card games. A complete set of cards is a pack or deck. Playing cards are often used as props in magic tricks, as well as occult practices such as cartomancy, and a number of card games [...]

A card game is any game using playing cards, either traditional or game-specific.
The deck or pack
A card game is played with a deck (common in the US), or pack (common in the UK), of cards intended for that game. The deck consists of a fixed number of pieces of printed cardboard known as [...]