The hosted domains feature of a web hosting account refers to the amount of registered domain names that one could add within the exact same account. Registering a domain name and hosting it are two different services although many people consider them to be the very same thing. While the registration means that you become the owner of a given domain address, the hosting element is what actually permits you to have a site because this is where your data and emails will be. Because these are two separate services, you are able to register a new domain name with one company and host it with another one by changing its name servers (DNS) - the domain will work in the exact same way as if it was registered and hosted with the same company. It is also very important to know that changing the hosting means pointing the domain address to an alternative company and not transferring it.