Cards are small, rectangular pieces of paper or plastic that often have information or images printed on them. They can be used for various purposes, such as playing games, sending messages, or making transactions. For example, a playing card is used in games like poker, while a greeting card is sent to celebrate special occasions like birthdays. In addition to their recreational uses, cards are also essential in everyday life. Credit cards allow people to make purchases without cash, while business cards help professionals share their contact information. Overall, cards are versatile tools that play a significant role in both fun and practical activities.