The hosted domains feature of a web hosting account refers to the amount of registered domain names that you can add within the same account. Registering a domain and hosting it are two completely different services although some people consider them to be the exact same thing. While the registration means you become the owner of a given domain, the hosting element is what in fact allows you to have a website because this is where your files and email messages are going to 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 one by modifying its name servers (DNS) - the domain name will work in the exact same way as if it was registered and hosted with the exact same company. Also, it is extremely important to know that changing the hosting means pointing the domain address to another company and not transferring it.