That's not quite true for Wal-Mart. There exist Wal-Mart Supercenters which are basically a full-blown grocery store combined with a traditional Wal-Mart store

That's not quite true for Wal-Mart. There exist Wal-Mart Supercenters which are basically a full-blown grocery store combined with a traditional Wal-Mart store. There also exist Wal-Mart Neighborhood Markets which are regular grocery stores. It's not uncommon for some people to refer to all of them as simply "Wal-Mart", especially if only one of them exists locally.