Registering a domain and hosting one is usually mistaken by many people to be the same thing. These are actually 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 names which you can accommodate within the same web hosting account and have site data and email messages for them. Your websites will function in precisely 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 name without hosting it will grant you ownership, but will not enable you to have a website until you host this domain name in some account so that records for it are set up and it starts opening the information from that account.