This is the 8099th most frequent Polish word.
novak
The Polish word "Nowak" is a common surname, equivalent to "new man" or "newcomer" in English.
In this sentence, 'Novak' is used as a surname, indicating someone's family name.
Novak to moje ulubione nazwisko.
Novak is my favorite surname.
Here, 'Novaka' (inflected form of Novak) indicates ownership, corresponding to Novak as the author of the book.
Codziennie czytam książkę Novaka.
I read Novak's book every day.
In this case, 'Novak' is used to identify a person by their last name.