Is it possible to propose new loanwords to be adopted into English? If so, I'd like to offer Formensprache: in art etc., literally, it'd be "language of forms" or "language of shapes"; that is, not just the specific shape, but the way shape and form are employed.
I think it'd make a nice one, just like "Zeitgeist" or "Schadenfreude" or "Weltschmerz".
So since there's (obviously) no top-down procedure to add new loanwords to a language... just go forth and use it. ^^