I really liked the WordPress term glossary put out by Bridget Willard and the WordPress marketing team a few months back. This project seems to have no relationship to that other than a similarity of intent. What’s really cool about the WPGlossary.net from the Anders Norén is that it comes with a slick interface for searching and is just really pretty.
That’s not too surprising, given as Norén appears to be a WordPress theme designer himself. I don’t find myself directly serving many people confused by the complex terminology of the WordPress world, but I’m sure some of our readers are in that position, and I think this would be a great resource to use and point your clients to.