User UX/UI
UX vs UI - an introduction
User Experience and User Interface, are two terms from the world of design... everything from modeling motorcycles to designing lamp switches, from traffic flow at post offices to appliance handles and the latest and greatest iPhone app, Designers everywhere are concerned with Users and judging how effectively their end-result adapts to them. These two terms go hand-in-hand to testing why a design succeeds ... and fails. See my article Speedometers and speedtraps for an illustration of the difference.
User Experience UX is a design term denoting the User's expectations, actions, and consequences.
User Interface UI then, is the subset of that topic that confines itself to the presentations that the user sees (eg. the buttons, texts, labels, etc.), the choices he should make, and the methods provided that allow him to communicate those wishes back to the system.
One small example of the difference, user frustration vs reward is part of UX (a baldface understatement!), but not of UI.
The dropcaps on this page, as well as others around the site, come from the blog
Daily Drop Cap by Jessica Hische
AN ILLUSTRATIVE INITIAL EVERY DAY