This is the 2684th most frequent Polish word.
ciepło
Warmth.
Here, 'ciepło' is used as a noun to describe the physical sensation of warmth experienced.
Lubię ciepło słońca na mojej skórze.
I like the warmth of the sun on my skin.
In this sentence, 'ciepło' is again used as a noun, indicating the transfer of warmth from one person to another in a metaphorical sense.
Rozgrzała mi ręce swoim ciepłem.
She warmed my hands with her warmth.
Here, 'ciepło' is used in an adverbial form (with 'jest') to describe the temperature condition in the environment.