Carnauba wax is from carnauba palms (Copernicia prunifera) that grow in Northern Brazil. The word "camauba" happens when someone sees an "r" and an "n" close together and think it is an "m" instead of an "rn" combination. Because of this, the word "camauba" is not found in any dictionary or encyclopedia unless there is a typo. (Or if the page has been scanned and the "rn" becomes an "m" during the scanning.) You will find "camauba" where people have mis-copied the word. Both words refer to the same type of wax.