This document defines different types of retailers and wholesalers. It discusses department stores, supermarkets, warehouse retailers, specialty retailers, e-tailers, convenience retailers, and discount retailers. It also covers merchant wholesalers, general wholesalers, specialty wholesalers, specific product wholesalers, discount wholesalers, drop ship wholesalers, and online wholesalers. Each type is defined in 1-2 sentences explaining their business model and products offered. The document provides an overview of various retail and wholesale business models.