On Amex, CVS is classified as "MERCHANDISE & SUPPLIES - PHARMACIES" and my local grocery store is "MERCHANDISE & SUPPLIES - GROCERIES."

On Amex website it says "A supermarket offers a wide variety of food and household products such as meat, fresh produce, dairy, canned and packaged goods, household cleaners, pharmacy products and pet supplies."

Amex PRG has 2x at Supermarkets, so what qualifies as a Supermarket?