In order to make a web site, you need two things - your own domain and a web hosting plan for it. The domain registration is the actual web address which you enter in a web browser to access a website, while the hosting space is where your site files is going to be. These are two closely related, but separate services, although many people believe that registering the domain is enough. Similar to the disk space and the monthly traffic features which a given web hosting plan has, there are a certain number of registered domain names which you can add as hosted which means that you can have the web content for them in some account even if the domains are in fact registered via a different provider. In technical terms, it doesn't matter if a domain is registered and hosted with the same company or is registered with one company and directed to a different one - either way your websites will operate exactly the same way.