I was recently reading this article and it had an interesting insight that I think is relevant to us:
Why do American climbers call it “Rappelling”?
They chose the French term for sliding down a rope whereas we chose the German. Nothing more to it than that.
Now we have two tags rappelling and abseiling not to mention abseil (though this one should disappear soon). What do we do about this? What's SE's policy on this kind of thing?