@menelion
"Language" doesn't have to mean spoken language. Look at old UI designs - most of the key elements carry an obvious meaning, often conveyed through visual means as much as words. This, too, is language. The crucial thing here is that it's unambiguous. Knowing the design elements enables the user to predict what an action is supposed to do and a developer to understand what their users would want to happen. It's become rather fashionable to break that pattern, though...
@david_chisnall