Money is what people use to buy things. You give money, and you get food, toys, or clothes.
Long ago, a farmer had eggs and wanted bread. A baker had bread and wanted eggs. They swapped eggs for bread. No money was needed.
Money can look different. It can be a coin or a note. It can also be a card or a phone tap. It is still money.
People trade money for things they want, in many forms.
Why do people use money?