No, Dropshipping is basically a subset of ecommerce. Dropshipping is a form of ecommerce where you do not own or hold stock of a product, you merely make the sale on a website, and get the manufacturer to send it to the customer on your behalf. You pocket the difference between the sale and the cost from the manufacturer. Ecommerce is a much broader field that includes dropshipping, but could be defined as any consumer product that is bought or sold on the internet.