This is the 12455th most frequent Polish word.
nadopiekuńczości
Excessive overprotectiveness.
In this sentence, "nadopiekuńczość" is again a noun, used as the subject indicating overprotective behavior as a general concept.
Nadopiekuńczość może prowadzić do braku samodzielności u dzieci.
Overprotectiveness can lead to a lack of independence in children.
Here, "nadopiekuńczości" is used in its grammatical form to reflect the possessive link to the subject "her" and refers to the specific overprotectiveness of the person mentioned.
Pomimo jej nadopiekuńczości, córka uparcie stara się być niezależna.
Despite her overprotectiveness, the daughter is determined to be independent.
Here, "nadopiekuńczość" is used as a noun to describe the behavior of excessive protectiveness.