I was at a grocery store yesterday
I got my stuff from a grocery store
I prefer grocery stores to the open market
My favourite is Wal-Mart Stores, Inc., doing business as Walmart, is an American multinational retail corporation that operates a chain of hypermarkets
A grocery store or grocer's shop is a retail shop that primarily sells food. A grocer is a bulk seller of food.
Department store
A department store is a retail establishment offering a wide range of consumer goods in different product categories known as "departments". In modern major cities, the department store made a dramatic appearance in the middle of the 19th century, and permanently reshaped shopping habits, and the definition of service and luxury. Similar developments were under way in London (with Whiteleys), in Paris ("Le Bon Marché" in 1852) and in New York (with Stewart's).
Today, departments often include
Walmart
Walmart Inc. (; formerly Wal-Mart Stores, Inc.) is an American multinational retail corporation that operates a chain of hypermarkets, discount department stores, and grocery stores, headquartered in Bentonville, Arkansas. The company was founded by Sam Walton in 1962 and incorporated on October 31, 1969. It also owns and operates Sam's Club retail warehouses. Walmart has 11,368 stores and clubs in 27countries, operating under 55 differentnames. The company operates under the name Walmart in the United States and Canada, as Walmart de México