The “Library Terms That Users Understand” website, sometimes mentioned in these discussions, is now 10 years old. While it’s still relevant and useful, I believe it has pretty much made its point.
So, I’ve updated the resource list and condensed the site into a single page. It’s still available, but won’t be updated with new material.
I remember first seeing this site forever ago and getting really excited at the user-centered thinking. Definitely an inspiration!
I’ll disagree with John, though. I’m not quite sure that the site has made its point since there’s still a ton of confusing labels on library websites.