This is the 230th most frequent Polish word.
ceny
The Polish word "ceny" means "prices" in English.
Here, 'ceny' is used in its plural nominative form, referring to 'prices' in general.
Ceny w sklepie są bardzo wysokie.
The prices in the store are very high.
In this case, 'ceny' is used in its singular genitive form, indicating the price of a specific item.
Nie znam ceny tego produktu.
I do not know the price of this product.
Here, 'ceny' is in its plural accusative form, referring to the act of comparison involving 'prices.'