This document defines key marketing concepts including potential market, market demand, customer value, product satisfaction, and different types of products and services. It explains that a potential market includes future customer groups that may purchase a company's products or services. Market demand refers to the total demand for a specific product across a given time period and region. The document also distinguishes between tangible goods like products that can be seen and touched, and intangible services. It then categorizes products and services into various types including durables, non-durables, convenience products, preference products, shopping products, and specialty products.