lol make up a word yeah
anyway, I would say the goal of usability is to create the most efficient
interface between the users of the site and it's function.
It's not the same as design though, it is an aspect or a requirement. In the design you must specify both the level of usability and who it will be used by.
In addition, you may want to specify that it should be an interesting experience to use (more fun than just utiliterian), but this is different from usability.
Good usability is a pre-requisit of good user experience - bad usability means bad experience, but
good usability just means you've reached the basic foundation on which to build a more interesting experience.