I guess pretty much all the languages around the world use some variation of the work kava/kafe, don’t they? I can’t think of any language that wouldn’t use the word. Obviously I don’t speak all the world languages.
More interesting situation is with the tea - half of the world uses some variation of the word tea, the other half uses some variation of the word chai.
The original Kawa was an interpreter written by Alex Milowski, who is (I assume based on the last name) of Polish backgound. I essentially took over Kawa (with his permission), changed to be compiler-based, and over time re-wrote most or all of it.