If you wish to create a web site, you need 2 things - a domain name and a web hosting plan for it. The domain registration is the actual web address that you enter in an Internet browser to reach a site, while the hosting space is where your site data will be. These are 2 tightly connected, but independent services, while many people think that registering the domain name is enough. Similar to the disk space and the monthly traffic features that a given hosting plan provides, there are a certain number of registered domain names which 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 through a different company. In technical terms, it doesn't matter if a domain is registered and hosted with the exact same company or is registered with one company and directed to another - in either case your sites will operate in exactly the same way.