I don't know anything about a few words!
I learned my definition many years ago from the song
Paper Moon. (I'll remember as many words as I can)
Oh it's only a paper moon/ hanging over a cardboard sea/ but it wouldn't be make-believe/ if you believed in me.
(can't remember the next set)
[bridge] Without your love,
it's a honky-tonk parade/ without your love, it's a melody played in a penny arcade.
It's a Barnum and Bailey world/ just as phony as it can be/ but it wouldn't be make-believe/ if you believed in me.
i.e., unreal - "just going through the motions"
- A.