A credit card is a financial tool that allows users to borrow money from a bank or financial institution to make purchases. Instead of paying cash immediately, the cardholder agrees to repay the borrowed amount later, often with interest if not paid on time.

Credit cards are widely used for convenience, online shopping, and emergency expenses. They often come with benefits such as rewards, cashback, and travel points. However, responsible use is essential, as high interest rates and overspending can lead to debt.
In summary, credit cards offer flexibility and financial convenience, but they must be managed carefully to avoid financial problems.