The hosted domains feature of a hosting account refers to the amount of registered domains which you could include in the exact same account. Registering a domain address and hosting it are two totally different services although many people consider them to be the exact same thing. While the registration means you become the owner of a certain domain name, the hosting element is what actually permits you to have a web site as this is where your files and email messages will be. Because these are 2 independent services, you can register a new domain with one company and host it with another by changing its name servers (DNS) - the domain address will work in the exact same way as if it was registered and hosted with the exact same company. Also, it is important to know that changing the hosting means pointing the domain address to an alternative company and not transferring it.