those some useful examples:
دافئ is the kind of warm that protect us from cold, like in winter when you cover yourself, or eat a soup
things that are دافئ make us feel good and have positive feeling
شربة دافئة
حضن دافئ
صدر دافئ
الدفئ و الحنان
(to describe tenderness )
and we say:
ماء ساخن
طعام ساخن
(to describe food or some thing, it just means hot)
and :
جوّ حارّ
(to describe weather )
(also حارّ for the word "high temperature" in general: like body temperature)