If you wish to create a web site, you need two things - a domain and a website hosting plan for it. The domain registration is the actual website address that you enter in a browser to reach a website, while the hosting space is where your site data will be. These are two very closely connected, but individual services, although many people think that registering the domain name is enough. Much like the disk space and the monthly traffic features which a given website hosting plan offers, there are a certain number of registered domains which you can add as hosted i.e. you can have the web content for them in some account even when the domains are in fact registered through a different company. In technical terms, it does not matter if a domain name is registered and hosted with the exact same company or is registered with one company and directed to a different one - in any case your sites will function in exactly the same way.