The hosted domains feature of a website hosting account indicates the number of registered domains that one can include in the exact same account. Registering a domain and hosting it are two different services although a lot of people consider them to be the very same thing. While the registration ensures that you become the owner of a given domain name, the hosting aspect is what really allows you to have a site considering that this is where your files and e-mails will be. Because these are 2 different services, you are able 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 with the same company. Also, it is important to know that changing the hosting means pointing the domain name to a different company and not transferring it.