This is the 4942nd most frequent Polish word.
poczuć
"Poczuć" means "to feel" or "to sense."
This usage of 'poczuć' refers to sensing emotion or internal feelings.
Poczułem radość na wieść o wygranej.
I felt joy upon hearing about the victory.
Here, 'poczuć' is used to mean perceiving a sensation through senses.
Podczas spaceru mogłem poczuć świeże powietrze.
During the walk, I could feel the fresh air.
In this case, 'poczuć' implies actively observing or experiencing a physical difference.