This is the 8652nd most frequent Polish word.
płynąc
"Płynąć" means "to flow" or "to swim" in English, depending on the context.
The word 'płynie' is used to describe the movement of a boat on water.
Łódź płynie po rzece.
The boat is floating on the river.
The word 'płynie' metaphorically describes the passage of time.
Czas płynie nieubłaganie.
Time flows relentlessly.
The word 'płynął' describes the action of a fisherman swimming.