I learned it as the "Open Apple" key, and I used that for many years, until people stopped having any idea what I was talking about. And it's way too many syllables. I had to retrain myself to call it "command".
I refer to it as cloverleaf when I’m doing phone support for family and friends. Seems to convey the idea to them pretty clearly.
Same. Force quit will always be Open Apple-Option-Escape in my mind be my LC II still had the old markings in addition to the new.
But if you are trying to tell what to press to someone over the phone, they won't find the apple key.
This is most true, I always have to correct myself when I try to show keyboard shortcuts to my colleagues.