This is the 7541st most frequent Polish word.
księżniczki
"Princesses."
Here, 'księżniczki' is used as a plural noun referring to female royalty who are princesses.
Księżniczki mieszkały w pięknym zamku.
The princesses lived in a beautiful castle.
In this sentence, 'księżniczek' is the genitive plural form of 'księżniczka', used to show possession or relation pertaining to princesses.
Lubię książki opowiadające historie księżniczek.
I like books telling stories about princesses.
Here, 'księżniczki' serves as the subject in plural, denoting princesses featured in tales.