If you wish to make a web site, you need two things - a domain and a website hosting plan for it. The domain registration is the actual web address which you type in a web browser to reach a website, while the hosting space is where your site files is going to be. These are 2 very closely related, yet individual services, although many people believe that registering the domain name is enough. Similar to the disk space and the monthly traffic features which a given website hosting plan provides, there are a certain number of registered domain names you can include as hosted i.e. you can have the web content for them in some account even if the domains are in fact registered using a different provider. In technical terms, it doesn't matter if a domain is registered and hosted with the same company or is registered with one company and directed to another one - in either case your sites will function in exactly the same way.