This document defines and describes different types of markets. It begins by defining a market as a place where buyers and sellers meet to exchange goods and services. The main types of markets discussed are perfect competition, monopoly, monopolistic competition, and oligopoly. For each market type, the key features that define it are provided, such as the number of buyers and sellers, product homogeneity, barriers to entry, and pricing behavior. Examples are also given for some of the market types.