This is the 7494th most frequent Polish word.
koń
Horse.
The word 'koń' is used as a personal noun to refer directly to the animal.
Koń biega po łące.
The horse is running on the meadow.
Here, 'koń' refers to the means of transportation, showing its reliance on the animal.
Kto nie ma konia, nie pokona tej trasy.
Who doesn't have a horse won't complete this route.
In this case, 'koń' is used metaphorically to describe someone who works hard.