In order to make a website, you need 2 things - a domain name and a website hosting plan for it. The domain registration is the actual website address which you type in an Internet browser to access a website, while the hosting space is where your website data will be. These are 2 tightly connected, but independent services, even though many people think that registering the domain is enough. Much like the disk space and the monthly traffic features that a given web hosting plan provides, there are a certain number of registered domain names that you can add as hosted i.e. you can have the web content for them in some account even when the domains are in fact registered through a different provider. In technical terms, it does not matter whether a domain name is registered and hosted with the same company or is registered with one company and pointed to another - either way your websites will operate exactly the same way.