When I read the op, a lot of verses came to mind that tell us about what kinds of conversations to just bow out of. Like the one about arguments over the meanings of words that don't do anything to help build us up in our trust of God. Or arguments over spiritual pedigrees (which I take to be like, for example, arguing with someone over whether the pope has the keys some other dude gave him.)
But then, I have had very good and edifying discussions over the most accurate definition of a word in the bible.
So...it isn't that a conversation over the meaning of a word, translated from another language, can't be edifying. It seems the arguing part is what isn't edifying. That's where it moves from good to bad and flesh gets stirred up.
But you know, there are some threads that I've learned to not go into just based on the title. Or sometimes even based on the person who is the op, because I know it will just be the same unlovely argument they've been caught up in for months, started again in a new thread. I don't enter the thread because I know it won't help me to grow in trust of God. And that's what I always need help with.