Registering a domain name and hosting one is sometimes mistaken by a lot of people to be one and the same thing. They are actually two different services - the domain name registration is the actual name and nothing more, while the hosted domains feature shows the amount of already registered domains that you can accommodate within the same website hosting account and have website files and emails for them. Your websites will work in exactly the same way no matter whether 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 address without hosting it will give you ownership, but will not enable 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 content from that account.