The hosted domains feature of a hosting account refers to the number of registered domains which you can include in the same account. Registering a domain address and hosting it are two totally different services although many people consider them to be the same thing. While the registration means you become the owner of a certain domain, the hosting aspect is what really enables you to have a web site because this is where your files and e-mails are going to be. Since these are two different services, it is possible to register a new domain address with one company and host it with another one by changing its name servers (DNS) - the domain name is going to work in the exact same way just as if it was registered and hosted using the same company. Also, it is very important to know that changing the hosting means directing the domain name to an alternative company and not transferring it.