This is the 7496th most frequent Polish word.
kościerzyny
"Kościerzyny" does not have a direct meaning in English; it is most likely a proper noun, such as the name of a place (e.g., Kościerzyna, a town in Poland).
The word 'Kościerzyna' here is a proper noun, referring to the name of a specific town in Poland.
Kościerzyna to malownicze miasto w Polsce.
Kościerzyna is a picturesque town in Poland.
In this context, 'Kościerzyny' is used to refer to the town's location as a point of view or origin.
Z Kościerzyny widać Jezioro Wdzydze.
From Kościerzyna, you can see Lake Wdzydze.
Here, 'Kościerzyny' is in the possessive case, describing the town and its inhabitants.