The hosted domains feature of a web hosting account indicates the number of registered domain names that one can add in the same account. Registering a domain address and hosting it are 2 different services even though many people consider them to be the same thing. While the registration signifies that you become the owner of a specific domain address, the hosting aspect is what in fact permits you to have a site because this is where your files and emails are going to be. Since these are two different services, it is possible to register a new domain with one company and host it with another one by modifying its name servers (DNS) - the domain address shall work in the exact same way just as if it was registered and hosted with the exact same company. It is also extremely important to know that changing the hosting means pointing the domain name to an alternative company and not transferring it.