Registering a domain and hosting one is commonly mistaken by a lot of people to be one and the same thing. They are actually two separate services - the domain address registration is the actual name and nothing more, while the hosted domains feature reveals the amount of already registered domain names which you could accommodate within the same web hosting account and have website files and email messages for them. Your sites will function in exactly the same way no matter if the domains are registered and hosted in one place or are registered with company A and pointed to company B. Simply registering a domain name without hosting it will grant you ownership, but will not enable you to have a web site if you don't host this domain name in some account so that records for it are created and it starts opening the information from that account.