Merchant Service includes the retail merchant

From: merchantaccounts.cn

Merchant Accounts refer to the actual account that allows the transfer of money from the customers account to the merchant’s bank provided by merchant services. It may or may not include the provision of software and shop cart required to make the site interactive and ready to charge the customers credit card. Merchant service is a term that refers to the actual software that is associated with charging credit cards. It encompasses not only the merchant account but the integral software as well. Merchant Services include the retail merchant and the Internet merchant so that whether the sales are face to face or electronic the merchant is able to accept credit cards.

Merchant Services are provided for:

Retail merchant accounts
On store transactions
Internet merchant accounts
Online merchant accounts
Mail/Phone Order processing
Check Services
Seasonal merchant accounts