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 address registration is the actual name and nothing more, while the hosted domains feature shows the number of already registered domain names you can accommodate in the same web hosting account and have website data and emails for them. Your websites will work in exactly the same way no matter if the domains 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 website unless you host this domain in some account so that records for it are created and it starts opening the information from that account.