This is the 474th most frequent Serbian word.
поповић
"Поповић" is a Serbian surname meaning "son of a priest."
Here, Поповић is used as a surname of a person, commonly applied to teachers or professionals.
Поповић је одличан професор историје.
Popović is an excellent history teacher.
Here, Поповић is used with a grammatical suffix to indicate an instrumental case for the surname, demonstrating the effects of Serbian grammatical cases.
Јуче сам се срео с Поповићем у парку.
Yesterday, I met Popović in the park.
In this sentence, Поповић represents a street name, showing a toponymic or locational usage.