Really? I mean, I guess I can see that, but how is it different than, say, a...hm, I can't really come up with a counterexample. I could call it the "First Language" in mechanical text and refer to the checks as "diction checks" or something. That might get rid of the "Base Tzocatl DC" thing that isn't really a DC problem while I'm at it, if I just call it a "Diction check".