Registering a domain name and hosting one is often mistaken by many people to be one and the same thing. These are in reality 2 separate services - the domain name registration is the actual name and nothing else, while the hosted domains feature reveals the amount of already registered domain addresses which you can accommodate in the same hosting account and have website data and email messages for them. Your websites will work in exactly the same way regardless if the domains are registered and hosted at the same place or are registered with company A and directed to company B. Simply registering a domain address without hosting it will grant you ownership, but will not allow you to have a web site until you host this domain in some account so that records for it are created and it starts opening the data from that account.