Usability vs User Experience

Usability answers the question, “Can the user accomplish their goal?” In the case of our camera shopper, from the perspective of the site’s design, she did accomplish the goal, being very satisfied with the result.

User experience answers the question, “Did the user have as delightful an experience as possible?”The store portion of the experience canceled out the online portion.

- Jared Spool 

From The Difference Between Usability and User Experience