A grocery store is a store established primarily for the retailing of food. You buy food at a grocery store. A grocer, the owner of a grocery store, stocks different kinds of foods from assorted places and cultures, and sells them to customers. Large grocery stores that stock products other than food, such as clothing or household items, are called supermarkets. Small grocery stores that mainly sell fruits and vegetables are known as produce markets (U.S) or greengrocers (Britain), and small grocery stores that predominantly sell snack foods and sandwiches are known as convenience stores or delicatessens.