What's with all of this revisionist history? Seems like everyone is trying to take the opportunity to misattribute the coining of words to French. No, the French did not coin the word geography. The word geography was coined by the ancient greek philosopher Eratosthenes.
So I don't see your point, you just demonstrated that it is a basic feature of romance/latin language to import word from Greek and that latin root are just the base of all romance language. (that all share a very close vocabulary)
Tsunami is Japanese. French? "Tsunami"
Yes you can use Tsunami in French (like you can do in English) but the phenomena is know in French as "raz-de-marée" and "sarrigue" can be used for opposum, automate is also a synonyme for robot etc. I think that a basic knowledge of the French language will help you to pick better exemples...