Question

ah, nature, keep him warm ( noun form)

Answer 1

ah nature, give him warmth

Answer 2

Original sentence:

Ah, nature, keep him warm

Final sentence after using the noun form of “warm” is as follows:

Ah nature, give him warmth

The noun form of warm is “warmth”

Ah is assign of exclamation. The word nature is noun itself. The word give is a verb. The word him is a pronoun. Hence the only word that needed to be changed in its noun form is warm to warmth.