ELI5: Explain Like I'm 5

Credit card

A credit card is like an IOU from a bank. It’s like a plastic card that lets you borrow money from the bank to buy things. When you get a credit card, you get a set amount of money to use. You can use it to buy things like clothes or food, but you have to pay back the money to the bank. You can do this by paying back the exact amount you owe, or a little bit at a time with interest.