If you want to create a website, you need 2 things - a domain name and a web hosting plan for it. The domain registration is the actual website address that you enter in a browser to access a site, while the hosting space is where your site data is going to be. These are 2 very closely connected, but independent services, while many people assume that registering the domain name 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 domains 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 provider. 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 another one - either way your sites will function the very same way.