If you want to make a web site, 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 web browser to reach a website, while the hosting space is where your website files is going to be. These are 2 closely related, but separate services, even though many people think that registering the domain is enough. Just like the disk space and the monthly traffic features that a given web hosting plan offers, there are a certain number of registered domain names which 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 through a different firm. In technical terms, it does not matter whether a domain is registered and hosted with the exact same company or is registered with one company and directed to a different one - in any case your websites will operate exactly the same way.