This is the 273rd most frequent Polish word.
nasz
"Our"
In this sentence, 'nasz' is used as a possessive pronoun modifying the noun 'pies' (dog), indicating ownership belonging to 'us'.
Nasz pies uwielbia spacery.
Our dog loves walks.
Here, 'nasz' functions as a possessive pronoun used in an interrogative sentence to inquire if the 'samochód' (car) belongs to us.
Czy to nasz samochód?
Is this our car?
In this context, 'nasz' is a possessive pronoun describing the noun 'przyjaciel' (friend), specifying that the friend is associated with us.