If you wish to create a website, you need 2 things - a domain name and a hosting plan for it. The domain registration is the actual website address which you type in a browser to reach a website, while the hosting space is where your site data is going to be. These are 2 very closely connected, yet separate services, even though many people believe that registering the domain is enough. Much like the disk space and the monthly traffic features which a given website hosting plan offers, there are a certain number of registered domain names that you can include as hosted i.e. you can have the web content for them in some account even when the domains are in fact registered using a different provider. In technical terms, it does not matter if a domain name is registered and hosted using the same company or is registered with one company and pointed to another one - in either case your websites will function in exactly the same way.