Art and Pretention

You may have noticed, if you regularly check out this blog, that I'm an art nerd. I'm hesitant to claim the word artist because, although I dabble, I don't think I'm especially good. (And not so much doing it for the product as I am the process.) So I love it when someone actually explains to me what is the what in art. Today, we have the difference between Art Nouveau and Art Deco. Although they are similar, I really needed someone to show me the difference, as I'm sure I'll need to be pretentious enough to explain this to someone someday.
(If you're wondering: the picture to the right is art nouveau.)