An alias is a domain name that points to your website, but may not be the primary name at which the website is hosted. For example, this website is hosted at trwebco.com but as an alias, it can also be reached at webdesignoceancounty.com
Aliasing can be done for a keyword benefit or marketing purposes. For keywords, the desired words may be embedded in the domain name and therefore attributed by SEs to the domain they point to. Obviously we have tried to capture “Web Design Ocean County” in the example above. Does it work?