..more common to hear "Amazon rain-forest" instead of "Amazon jungle," for example. There may be a slight difference in usage..

http://www.ladatco.com/rf-abt.htm#What is a rainforest?

Edit:
http://www.therainforestsite.com/cgi-bin/WebObjects/CTDSites


First time I did that! Thanks, eta and Faldage. Sorry I sent the thread wide with that link.

[Edit 2]
A nagging worry that the newly posted link was not quite all right, made me return to try it myself. True to form, it doesn't work! To save myself from further embarassment, I have posted the link to the main page of the site. Phew!