Registering a domain and hosting one is sometimes mistaken by many people to be one and the same thing. These are in fact two separate services - the domain name registration is the actual name and nothing more, while the hosted domains feature refers to the amount of already registered domain addresses that you can accommodate within the same web hosting account and have website data and email messages for them. Your websites will work in precisely the same way regardless of whether the domain addresses 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 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.