The symbols you are referring to are called suits in playing cards. The four suits in a standard deck of playing cards include clubs, diamonds, hearts, and spades. Each suit has a unique design and symbol, and is typically represented by a different color.
In many card games, such as poker, the suits have no ranking or value. However, in some games, such as Bridge, the suits are ranked, with spades being the highest, followed by hearts, diamonds, and clubs.
The suit symbols have a long history, with the design of the symbols evolving over time. The exact origins of the suit symbols are unclear, but it is believed that they were inspired by medieval society, with the suits representing different classes of people, such as the nobility (spades) and merchants (diamonds).
Regardless of their origin, the suit symbols have become an iconic part of playing cards, and are recognizable around the world. They add to the visual appeal of the cards and help to distinguish the different suits, making it easier to play many card games.
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