This is the 539th most frequent Serbian word.
зворника
"Зворника" is the genitive singular form of "Зворник," which refers to the town of Zvornik in Bosnia and Herzegovina.
The word 'зворника' in this case is the genitive form of 'Зворник,' used to indicate the origin of the subject being discussed.
Мој друг је из Зворника.
My friend is from Zvornik.
Here, 'зворника' is used in the context of genitive singular to denote possession or relation to 'Зворник.'
Посетили смо знаменитости Зворника.
We visited the sights of Zvornik.
In this sentence, 'зворника' is again in the genitive case, typically used after prepositions like 'о,' indicating a topic of discussion.