1. First of all, shop and shop are synonyms, each with its own size, and drugstore is the traditional name of drugstore.
2. The difference between medicine and medicinal materials is that, generally speaking, "medicine" refers to western medicine (mostly in capsule form) and "medicinal materials" refers to Chinese medicine (herbs).
In combination with the above, pharmacies, like pharmacies, mainly deal in western medicine and Chinese patent medicines; Pharmacies, like pharmacies, mainly deal in Chinese medicine.
The pharmacy is the largest. In addition to Chinese and western medicines and medical devices, there are more abundant health care products.
As for the business model and scale, each has its own size, and it can be operated in the form of shops and supermarkets.
I didn't express myself fluently, but the general meaning should be clear. I hope I can help you.