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