Chain store and Co-op

Chain store noun - One of a chain of retail stores under the same management and selling the same merchandise.

Co-op and chain store are semantically related in place topic. In some cases you can use "Co-op" instead a noun phrase "Chain store".

Co-op noun - A jointly owned commercial enterprise (usually organized by farmers or consumers) that produces and distributes goods and services and is run for the benefit of its owners.

Chain store and co-op are semantically related in place topic. You can use "Chain store" instead a noun phrase "Co-op".