This is the 2227th most frequent Swedish word.
solen
The sun.
Here, 'solen' is the definite form of 'sol' (sun), used as the subject of the sentence.
Solen skiner klart på himlen.
The sun shines brightly in the sky.
In this case, 'solen' refers to the source of warmth, functioning as the object in a prepositional phrase.
Vi njuter av värmen från solen.
We enjoy the warmth from the sun.
Here, 'solen' is part of a locative phrase indicating the environment or condition under which the action occurs.