What is "Tribal" and "Tropical" Print?

Now that African fashion is seeing more attention and having its time to shine, the debate of what to call certain African products or African inspired products is in full swing. I've written about it here and so have others.

What I find interesting is the slippery terms being used to describe anything African/Asian/Non-Western such as "tribal" or "tropical" as in "tribal print" or "tropical fabric". What do you think?