The hosted domains feature of a hosting account refers to the amount of registered domains that you could add within the exact same account. Registering a domain address and hosting it are 2 different services although some people consider them to be the same thing. While the registration means that you become the owner of a certain domain name, the hosting part is what really enables you to have a website as this is where your files and email messages are going to be. Because these are two different services, it is possible to register a new domain name with one company and host it with another by modifying its name servers (DNS) - the domain is going to work in the exact same way just as if it was registered and hosted with the same company. Also, it is extremely important to know that changing the hosting means pointing the domain name to a different company and not transferring it.