A postal order is a means of payment. It is a financial instrument usually intended for sending money through the mail. It is
purchased at a post office and is payable at another post office to the named recipient. An I.O.U is a document that acknowledges a
debt but it is not a means of payment. A promissory note is a financial instrument that contains a written promise by one party to
pay another party a definite sum of money either on demand or at a specified future date. A promissory note typically contains all
the terms pertaining to the indebtedness, such as the principal amount, interest rate, maturity date, date and place of issuance, and
issuer's signature. CIF (Cost, Insurance, and Freight) is a term used in international trade for the point at which responsibility for
goods transfers from the seller to the buyer.