About the languages, there is bound to be some overlap when you make up new words. There are so many people on earth, so many languages, and most ways of putting together syllables sounds kinda like something someone understands. And sometimes the thing it sounds like will be insulting or derogatory - we're just too fond of those kind of words so there are a lot of them. But you really can't hold that against against a work of art.
I mean it already happens with the languages that exists, but due to the context you understand that it's not supposed to mean everything it may sound like.