Who is called retailer?
Retail
Retail is the process of selling consumer goods or services to customers through multiple channels of distribution to earn a profit. Retailers satisfy demand identified through a supply chain. The term "retailer" is typically applied where a service provider fills the small orders of a large number of individuals, who are end-users, rather than large orders of a small number of wholesale, corporate or government clientele. Shopping generally refers to the act of buying products. Sometimes this is done to obtain final goods, including necessities such as food and clothing; sometimes it takes place as a recreational activity. Recreational shopping often involves window shopping and browsing: it does not always result in a purchase.
Buyer
When someone gets characterized by their role as a buyer of certain assets, the term "buyer" gets new meaning. For example, a "buyer" is a person who purchases finished goods, typically for resale, for a firm, government, or organization; while a person who purchases material used to make goods is sometimes called a purchasing agent. In product management, the buyer is the entity that decides to obtain the product. A buyer's primary responsibility is obtaining the highest quality goods at the lowest cost. This usually requires research, writing requests for bids, proposals or quotes, and evaluating information received.