Definition of a Temporary Green

It is wise man who protects his pension.

There are four defined parts of the course that are not part of the general area: the teeing area, bunkers, penalty areas and the putting green [Rule 2.2a and 2.2b]. There is a Definition of the putting green. And there is Rule 13 with all the specific rules for play on the putting green. I think there is more of a hint that there needs to be a putting green.

I think you are misunderstanding that bit of Rule 1.1. It refers to ways in which a hole is completed without holing out, such as following a concession or your opponent's getting a loss of hole penalty in match play or not holing out in stableford.