A specialist store is a shop that caters to one specific retail market. Examples of specialist stores include camera stores, pharmacies, stationers and bookstores. In other words, a shop that specialises in one breed of products
Specialist stores compete with other types of stores such as department stores, general stores, supermarkets and variety stores. Specialist stores can be part of a retail chain, but independent specialist stores are also common.
References
Specialist store Wikipedia(Text) CC BY-SA