Peter Merholz from Adaptive Path, has written an interesting blog entry with great user comments titled, Usability != User Experience. The blog looks at the definition of what exactly is Usability and makes references to Whitney Quesenbery’s Five E’s Of Usability.
I found the article+comments really interesting as it reminded me about the recent discussions on words used by practicioners in the field, eg. The use of the word Design when refering to UCD, Visual, Information Design, etc, and the more recent discussion of whether the word “Architecture” is a misuse of the word in Information Architecture.