This is the 1018th most frequent Polish word.
grzegorza
"Grzegorza" is the genitive form of "Grzegorz," a Polish male first name equivalent to "Gregory," indicating possession or relation.
'Grzegorza' is used in the genitive case to indicate the person who is being listened to.
Słuchałem Grzegorza, jak grał na pianinie.
I listened to Grzegorz playing the piano.
In this sentence, 'Grzegorza' is used in the genitive case to indicate the person observed.
Widziałem Grzegorza na ulicy.
I saw Grzegorz on the street.
Here, 'Grzegorza' is in the genitive case to show possession.