If you want to create a website, you need 2 things - a domain name and a website hosting plan for it. The domain registration is the actual website address that you enter in a browser to reach a site, while the hosting space is where your site files will be. These are 2 very closely connected, but independent services, while many people assume that registering the domain is enough. Very similar to the disk space and the monthly traffic features that a given hosting plan offers, there are a certain number of registered domains 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 through a different provider. In technical terms, it doesn't matter if a domain is registered and hosted using the same company or is registered with one company and pointed to a different one - in either case your websites will function exactly the same way.