In order to make a web site, you need two things - your own domain and a website hosting plan for it. The domain registration is the actual website address which you type in a browser to access a site, while the hosting space is where your site files is going to be. These are 2 tightly connected, but separate services, even though many people assume that registering the domain name is enough. Much like the disk space and the monthly traffic features which a given website hosting plan provides, 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 if the domains have been registered through a different company. In technical terms, it does not matter whether a domain name is registered and hosted using the same company or is registered with one company and directed to another - either way your sites will operate in exactly the same way.