Market Forms

Market Forms Perfect competition, in which the market consists of a very large number of firms producing a homogeneous product. Monopolistic competition, also called competitive market, where there are a large number of independent firms which have a very small proportion of the market share. Oligopoly, in which a market is dominated by a small number of firms which own more than 40% of the market share. Oligopsony, a market dominated by many sellers and a few buyers. Monopoly, where there is only one provider of a product or service. Natural monopoly, a monopoly in which economies of scale cause efficiency to increase continuously with the size of the firm. Monopsony, http://en.wikipedia.org/wiki/Market_form