In order to create a web site, you need 2 things - your own domain and a website hosting plan for it. The domain registration is the actual website address that you type in a web browser to access a site, while the hosting space is where your site files is going to be. These are two tightly related, but independent services, although many people believe that registering the domain is enough. Much like the disk space and the monthly traffic features that a given web hosting plan features, there are a certain number of registered domain names you can add as hosted which means that you can have the web content for them in some account even when the domains are actually registered using a different service provider. In technical terms, it doesn't matter whether a domain is registered and hosted with the exact same company or is registered with one company and directed to another - in any case your websites will operate the very same way.