If you wish to make a web site, you need 2 things - a domain and a website hosting plan for it. The domain registration is the actual web address that you enter in a browser to reach a website, while the hosting space is where your website files will be. These are two closely connected, but separate services, while many people believe that registering the domain is enough. Just like the disk space and the monthly traffic features which a given hosting plan has, there are a certain number of registered domain names you can add as hosted i.e. you can have the web content for them in some account even if the domains have been registered via a different service 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 pointed to another - in any case your websites will function the very same way.