If you wish to create a web site, you need 2 things - a domain and a web hosting plan for it. The domain registration is the actual website address that you enter in an Internet browser to reach a site, while the hosting space is where your site data is going to be. These are 2 tightly connected, but separate services, while many people think that registering the domain name is enough. Just like the disk space and the monthly traffic features which a given website hosting plan features, 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 when the domains are actually registered using a different provider. In technical terms, it doesn't matter if a domain is registered and hosted using the same company or is registered with one company and pointed to another - either way your websites will operate exactly the same way.