This document defines key concepts related to markets. It discusses that a market is a place where goods and services are exchanged between buyers and sellers, including wholesalers and retailers. It also describes different types of markets based on their geographical scope, the types of goods exchanged, and the roles of buyers and sellers. Specific markets mentioned include commodity, capital, money, primary, secondary, terminal, spot, and futures markets. The document concludes with definitions of traditional and production-oriented marketing concepts.