The hosted domains feature of a hosting account indicates the amount of registered domains which you can add within the exact same account. Registering a domain address and hosting it are two totally different services although many people consider them to be the very same thing. While the registration means you become the owner of a given domain address, the hosting part is what actually permits you to have a web site considering that this is where your data and e-mails will be. As these are two independent services, you'll be able to register a new domain address with one company and host it with another by changing its name servers (DNS) - the domain shall work in the exact same way just as if it was registered and hosted with the same company. Additionally, it is important to know that changing the hosting means pointing the domain name to an alternative company and not transferring it.