When both sides know what the other side wants to say, and both sides accuse the other side of defecting from “common usage,” then whatever it is they are about, it is clearly not working out a way to communicate with each other. But this is the whole benefit that common usage provides in the first place. Why would you argue about the meaning of a word, two sides trying to wrest it back and forth? If it’s just a namespace conflict that has gotten blown out of proportion, and nothing more is at stake, then the two sides need merely generate two new words and use them consistently.