In economics, a commodity is an economic good, usually a resource, that specifically has full or substantial fungibility: that is, the market treats instances of the good as equivalent or nearly so with no regard to who produced them.
The price of a commodity good is typically determined as a function of its market as a whole: well-established physical commodities have actively traded spot and derivative markets. The wide availability of commodities typically leads to smaller profit margins and diminishes the importance of factors (such as brand name) other than price.
Most commodities are raw materials, basic resources, agricultural, or mining products, such as iron ore, sugar, or grains like rice and wheat. Commodities can also be mass-produced unspecialized products such as chemicals and computer memory. Popular commodities include crude oil, corn, and gold.
Other definitions of commodity include something useful or valued and an alternative term for an economic good or service available for purchase in the market. In such standard works as Alfred Marshall's Principles of Economics (1920) and Léon Walras's Elements of Pure Economics ([1926] 1954) 'commodity' serves as general term for an economic good or service.
Etymology
The word commodity came into use in English in the 15th century, from the French commodité, "amenity, convenience". Going further back, the French word derives from the Latin commoditas, meaning "suitability, convenience, advantage". The Latin word commodus (from which English gets other words including commodious and accommodate) meant variously "appropriate", "proper measure, time, or condition", and "advantage, benefit".
Description
Characteristics
In economics, the term commodity is used specifically for economic goods that have full or partial but substantial fungibility; that is, the market treats their instances as equivalent or nearly so with no regard to who produced them. Karl Marx described this property as follows: "From the taste of wheat, it is not possible to tell who produced it, a Russian serf, a French peasant or an English capitalist." Petroleum and copper are examples of commodity goods: their supply and demand are a part of one universal market.
Non-commodity items such as stereo systems have many aspects of product differentiation, such as the brand, the user interface and the perceived quality. The demand for one type of stereo may be much larger than demand for another.
The price of a commodity good is typically determined as a function of its market as a whole. Well-established physical commodities have actively traded spot and derivative markets.
Hard and soft commodities
Soft commodities are goods that are grown, such as wheat, or rice.
Hard commodities are mined. Examples include gold, silver, helium, and oil.
Energy commodities include electricity, gas, coal and oil. Electricity has the particular characteristic that it is usually uneconomical to store, and must therefore be consumed as soon as it is produced.
Commoditization
Commoditization occurs as a goods or services market loses differentiation across its supply base, often by the diffusion of the intellectual capital necessary to acquire or produce it efficiently. As such, goods that formerly carried premium margins for market participants have become commodities, such as generic pharmaceuticals and DRAM chips. An article in The New York Times cites multivitamin supplements as an example of commoditization; a 50 mg tablet of calcium is of equal value to a consumer no matter what company produces and markets it, and as such, multivitamins are now sold in bulk and are available at any supermarket with little brand differentiation. Following this trend, nanomaterials are emerging from carrying premium profit margins for market participants to a status of commodification.