If you want to make a website, you need two things - a domain name and a website hosting plan for it. The domain registration is the actual website address that you type in a browser to reach a website, while the hosting space is where your website files will be. These are 2 closely connected, yet separate services, even though many people assume that registering the domain name is enough. Much like the disk space and the monthly traffic features that a given web hosting plan provides, 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 via a different service provider. In technical terms, it does not matter whether a domain name is registered and hosted using the same company or is registered with one company and pointed to another one - either way your websites will operate in exactly the same way.