In order to create a website, you need 2 things - a domain name and a web hosting plan for it. The domain registration is the actual web address that you enter in an Internet browser to reach a site, while the hosting space is where your site files is going to be. These are two very closely connected, yet individual services, while many people believe that registering the domain is enough. Very similar to the disk space and the monthly traffic features which a given web 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 have been registered via a different company. In technical terms, it doesn't matter if 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 function exactly the same way.