To borrow means to take something that belongs to someone else with permission, knowing you must give it back. When you borrow money, you are using money that is not yours yet, based on trust and an agreement.
Borrowing is useful when:
You don’t have enough money right now
You expect to earn money later
You need help paying for something important
Example:
You borrow $1,000 from a bank because you need it now, even though you don’t currently have it.