a Wyrm/Wurm/Worm is just another word for the traditional, european, 4-legged, 2 winged dragon.
A wyvern is a 2-winged, 2-legged dragon.
A Chinese/Oriental dragon is a dragon like Ryu-zin. Long, snake-like, has 4 legs and no wings.
A Drake is just an archaic word for dragon.
For any other other kind of necessary clarifacation, see here: http://en.wikipedia.org/wiki/Dragon , there is a big table about half way down the page.
But why does the dragon's classifaction matter, anyway? The purpose of this was to just find a lot of origami dragons!
![Razz :P](./images/smilies/icon_razz.gif)
Anyway, here are my contributions: http://www.flickr.com/photos/bluepaper/3320420559/
http://www.flickr.com/photos/bluepaper/ ... 581719381/
and if it counts, http://www.flickr.com/photos/bluepaper/2407587917/
All were folded by me