I, however, see no reason the default meaning of "Theory of Evolution" must be that of biological evolution.
Maybe you don't but every damn scientist in the world, in the biological sciences or otherwise, takes this meaning - and if the public at large don't, then it is the fault of poor popular science, creationists, and you it seems...
Just walk into an astronomy/astrophysics department and ask what courses they offer on evolution, or the theory of evolution. They will politely direct you to the biological sciences department with a slight rolling of their eyes. Then you mention, but surely stars evolve? And they will roll their eyes still further and reply, oh, so you want a course on "stellar evolution"... lecture hall B, 10am.
Repeat this with the geology departemnt, with equivalent results.
Why are you trying to confuse this VERY simple, TRIVIAL matter???