a way of exchanging goods and services without using money, Barter, a piece of business that is done between people, especially an act of buying or selling, transaction, Products or goods that can be traded, bought and sold, Commodities, An economic concept that describes a situation, where two people each have something the other wants and can exchange them directly., Double coincidence of wants, An agreed-upon worth for a transaction that helps in determining the value of goods and services in the economy., Common standard measure of value., The capacity of an object or material to be split into pieces or portions., Divisibility, The ability of an object or material to be carried or moved from one place to another, Portability, A capacity of an object to last for a long time, Durability.

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