I was practicing with this site and it ask for the noun of the adjective warm and I didn’t find it in any dictionary. Please help me.
You must be looking for
- kalt -> Kälte
cold -> (the) cold
warm -> Wärme
- warm -> warmth
If it is could outside and someone just left the house, he might say
"Komm, lass uns zurück in die Wärme (des Hauses) gehen.
"Come, lets get back into the warmth (of the house).