If you want to create a website, you need 2 things - your own domain name and a web hosting plan for it. The domain registration is the actual website address which you type in a web browser to access a website, while the hosting space is where your website files is going to be. These are two tightly related, yet independent services, although many people believe that registering the domain is enough. Just like the disk space and the monthly traffic features which a given website hosting plan offers, 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 if the domains are actually registered through a different firm. In technical terms, it doesn't matter whether a domain name is registered and hosted using the same company or is registered with one company and pointed to another - either way your sites will operate exactly the same way.