Registering a domain name and hosting one is sometimes mistaken by a lot of people to be the same thing. They're in fact two separate services - the domain name registration is the actual name and nothing else, while the hosted domains feature refers to the number of already registered domain addresses you can accommodate in the same website hosting account and have website data and emails for them. Your websites will work in exactly the same way no matter whether 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 name without hosting it will give you ownership, but will not enable you to have a web site unless you host this domain in some account so that records for it are created and it starts opening the information from that account.