If you wish 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 which you enter in a web browser to reach a site, while the hosting space is where your site files is going to be. These are two closely connected, but independent services, although many people think that registering the domain is enough. Just like the disk space and the monthly traffic features that a given website hosting plan offers, there are a certain number of registered domain names you can include as hosted which means that you can have the web content for them in some account even when the domains are in fact registered via a different provider. In technical terms, it doesn't matter whether a domain name is registered and hosted with the exact same company or is registered with one company and pointed to another one - either way your sites will function exactly the same way.