Registering a domain and hosting one is sometimes mistaken by many people to be one and the same thing. They are actually 2 separate services - the domain name registration is the actual name and nothing more, while the hosted domains feature reveals the amount of already registered domains which you can accommodate within the same hosting account and have site files and e-mails 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 directed to company B. Simply registering a domain address without hosting it will give you ownership, but will not allow you to have a web site until you host this domain name in some account so that records for it are created and it starts opening the data from that account.