A bank check, also known as a cashier's check, is a secure method of payment used by individuals to transfer funds from their bank account to a payee. There are several other terms that can be used synonymously with bank check, including money order, certified check, and official check. A money order is a prepaid check that can be purchased at a bank or post office. A certified check is a personal check that has been verified by the bank. An official check is similar to a cashier's check, but it is issued by a government agency or financial institution. All of these methods provide a secure way to transfer funds and ensure that the payee receives the payment in a timely manner.