The hosted domains feature of a web hosting account denotes the number of registered domains that one could include within the exact same account. Registering a domain and hosting it are 2 totally different services even though many people consider them to be the exact same thing. While the registration means you become the owner of a given domain address, the hosting part is what in fact allows you to have a site considering that this is where your data and emails are going to be. Since these are 2 separate services, you can register a new domain address 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 using the same company. It's also important to know that changing the hosting means directing the domain name to another company and not transferring it.