Registering a domain name and hosting one is usually mistaken by a lot of people to be one and the same thing. These are in fact 2 different services - the domain registration is the actual name and nothing more, while the hosted domains feature refers to the amount of already registered domain names that one could accommodate within the same web hosting account and have site files and email messages for them. Your websites will function in precisely 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 without hosting it will grant you ownership, but will not enable you to have a web site if you don't host this domain address in some account so that records for it are set up and it starts opening the information from that account.