The term 'CASH' is a four-letter word that is commonly used in the financial world. It refers to money that is exchanged for goods or services, and is usually in the form of coins, paper currency, or checks. CASH is often used as a payment method in lieu of credit, which involves borrowing money from a lender and paying it back with interest. CASH transactions are typically considered more secure than credit transactions, as they do not involve any debt or interest.