A supermarket is a large self-service retail store that sells a wide range of household goods, including food and non-food items. One of the features of a supermarket is that it has many shops under one roof, with each section dedicated to a particular product category. Supermarkets often have a standardized layout, making it easy for customers to find what they are looking for. Another feature is that they are usually centrally controlled from headquarters, with decisions made about what products to stock, pricing, and promotions. Overall, supermarkets are designed to offer a convenient and efficient shopping experience for customers.