The hosted domains feature of a website hosting account indicates the number of registered domain names which you could include within the very same account. Registering a domain address and hosting it are two completely different services although a lot of people consider them to be the same thing. While the registration means that you become the owner of a certain domain, the hosting aspect is what actually enables you to have a website as this is where your data and e-mails will be. Since these are two independent services, you are able to register a new domain address with one company and host it with another by modifying its name servers (DNS) - the domain is going to work in the exact same way just as if it was registered and hosted using the same company. Also, it is important to know that changing the hosting means directing the domain name to a different company and not transferring it.