Borrowing is when you take something from someone else with the promise to return it later. This can happen with money, books, or even tools. For example, if you need a friend's book for a school project, you can ask to borrow it. Just remember to give it back when you're done! When you borrow money, like from a bank, you usually have to pay it back with extra money called interest. This is how banks make a profit. Borrowing can help you get what you need now, but it's important to be responsible and return what you borrowed on time.