I do my purchase from grocery store is a retail store that primarily sells food.
I do as well!  What grocery store do you shop at?
Wal-Mart Stores, Inc., doing business as Walmart, is an American multinational retail corporation that operates a chain of hypermarkets
Are they the largest grocery store in America?
Walmart has 11,703 stores and clubs in 28countries, operating under 59 name categories
Wow!  That sure is a lot!  I did not realize they were that big!  Are there any other brands that are any where near the size of Wal-Mart?
We also have the Asda stores ,Grocery stores often offer non-perishable food that is packaged in bottles, boxes, and cans; some also have bakeries, butchers,
Yeah, they really are convenient one-stop shops!
electronics sections.
In Canada, the United Kingdom, and the United States, supermarkets and convenience shops are sometimes described as grocery businesses, groceries or simply grocers. Small grocery stores that mainly sell fruits and vegetables are known as greengrocers (Britain) or produce markets (U.S.), and small grocery stores that predominantly sell prepared food, such as candy and snacks, are known as convenience shops or delicatessens.
Some grocery stores (especially large ones) form the centerpiece of a larger complex that includes other facilities,
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