The hosted domains feature of a website hosting account denotes the amount of registered domains which you could add in the same account. Registering a domain name and hosting it are 2 different services although many people consider them to be the same thing. While the registration ensures that you become the owner of a certain domain address, the hosting part is what in fact permits you to have a web site as this is where your data and e-mails are going to be. As these are 2 different services, you are able to register a new domain name with one company and host it with another one by modifying its name servers (DNS) - the domain name will 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 pointing the domain to another company and not transferring it.