Registering a domain name and hosting one is commonly mistaken by many people to be the same thing. They are in fact 2 separate services - the domain address registration is the actual name and nothing else, while the hosted domains feature refers to the number of already registered domain addresses you can accommodate within the same web hosting account and have website data and e-mails for them. Your websites will work in precisely the same way no matter if the domain names are registered and hosted in one place or are registered with company A and directed to company B. Simply registering a domain without hosting it will give you ownership, but will not allow you to have a web site unless you host this domain name in some account so that records for it are set up and it starts opening the data from that account.