Domain names are human-friendly identifiers that point to the IP addresses of resources on the internet. Web sites represent one such resource. Domain names must be unique, and must be registered through a registrar in order to be utilized. In the case of multi-domain hosting, you are able to host multiple (independent) web sites, each with their own; unique domain name, IP address, and other associated features - all under one single hosting account.
If you have yet to register a doman name for your hosting aaccount, it is important to note that it can also be done through BLD Hosting - during the order process.