Registering a domain and hosting one is frequently mistaken by many people to be the same thing. These are in fact two different services - the domain address registration is the actual name and nothing more, while the hosted domains feature reveals the amount of already registered domain addresses which you could accommodate within the same web hosting account and have website files and email messages for them. Your websites will function in exactly the same way regardless of whether the domain addresses are registered and hosted in one place or are registered with company A and directed to company B. Simply registering a domain name without hosting it will give you ownership, but will not enable 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 data from that account.