Registering a domain name and hosting one is often mistaken by many people to be one and the same thing. These are in fact 2 different services - the domain name registration is the actual name and nothing more, while the hosted domains feature reveals the amount of already registered domain addresses that you can accommodate within the same website hosting account and have site data and e-mails for them. Your sites will function in exactly the same way regardless of whether the domain addresses are registered and hosted at the same place or are registered with company A and pointed to company B. Simply registering a domain address without hosting it will give you ownership, but will not allow you to have a site if you don't host this domain name in some account so that records for it are created and it starts opening the content from that account.