This is the 12915th most frequent Polish word.
obserwowaniem
The act of observing.
The word 'obserwowaniem' is used here as a gerund form indicating the action of observing in a specific activity.
Jestem zajęty obserwowaniem ptaków na niebie.
I am busy observing birds in the sky.
'Obserwowaniem' functions as a means of expressing interest towards the activity of observing and implies a certain dedication.
On zawsze interesował się obserwowaniem zachowań dzikich zwierząt.
He was always interested in observing wild animals' behaviors.
This usage of 'obserwowaniem' describes a calming action or pastime of observing stars.