This is the 74th most frequent Serbian word.
пожаревац
Požarevac: A city in Serbia.
In this sentence, 'Пожаревац' is a proper noun used as the name of a city, thus serving as the subject of the sentence.
Пожаревац је град у Србији.
Požarevac is a city in Serbia.
Here, 'Пожаревцу' is in the dative case to denote the direction towards the city.
Путујемо ка Пожаревцу сутра ујутру.
We are traveling to Požarevac tomorrow morning.
In this sentence, 'Пожаревцу' is in the locative case, indicating the location of the event.