In order to create a web site, you need two things - a domain and a website hosting plan for it. The domain registration is the actual web address which you type in a web browser to access a website, while the hosting space is where your website files is going to be. These are 2 very closely related, yet individual services, while many people think that registering the domain name is enough. Very similar to the disk space and the monthly traffic features that a given web hosting plan features, there are a certain number of registered domains that you can add as hosted which means that you can have the web content for them in some account even when the domains have been registered through a different company. In technical terms, it doesn't matter whether a domain name is registered and hosted using the same company or is registered with one company and directed to another - in any case your sites will operate exactly the same way.