Unfortunately it is too late to have definitive terminologies in the numismatic arena. Even the mint is (very) guilty of miss using terms and reusing well established terms to mean new things. We cannot rely on the terminology itself to convey absolute meaning and as long as understanding can be reached in a reasonable period we don't need to. While I too wish that there was a book of well defined and absolute terminology for numismatics that all agree on and don't violate there isn't. That dream didn't come true and never will so I will try to always define those terms that are likely to have more than one meaning as I use them without being overbearing or condescending (I sometimes do that without realizing I am doing it and have to hurt myself when I wake up). I don't think I will ever forgive the mint for its use of "uncirculated" to mean a coin that was never intended to circulate at all just because they did not want to say "satin finish collector coin" or because they were too cheap to strike them a second time and say "satin proof".