Registering a domain name and hosting one is commonly mistaken by a lot of people to be one and the same thing. They are in reality 2 separate services - the domain address registration is the actual name and nothing more, while the hosted domains feature refers to the number of already registered domain names which you can accommodate in the same web hosting account and have site data and email messages for them. Your sites will function 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 without hosting it will give you ownership, but will not enable you to have a site if you don't host this domain address in some account so that records for it are created and it starts opening the content from that account.