Registering a domain name and hosting one is often mistaken by many people to be the same thing. They're in fact two different services - the domain name registration is the actual name and nothing more, while the hosted domains feature reveals the number of already registered domain names that 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 regardless if the domain names are registered and hosted at the same place or are registered with company A and directed to company B. Simply registering a domain name 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 content from that account.