Registering a domain name and hosting one is frequently mistaken by many people to be one and the same thing. These are in fact two different services - the domain registration is the actual name and nothing else, while the hosted domains feature shows the amount of already registered domain names that one could accommodate in the same web hosting account and have site data and emails for them. Your sites will function in exactly the same way regardless 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 address without hosting it will give you ownership, but will not allow you to have a website until you host this domain name in some account so that records for it are created and it starts opening the data from that account.