commodity -
Anything which has both a use-value and an exchange-value.
Wikipedia
A commodity is a good for which there is demand, but which is supplied without qualitative differentiation across a market. Commodities are often substances that come out of the earth and maintain roughly a universal price. A commodity is fungible, that is, equivalent no matter who produces it.
OmegaWiki Dictionary
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commodity Anything movable (a good) that is bought and sold.
commodity Raw materials, agricultural and other primary products as objects of large-scale trading in specialized exchanges.