This is the 423rd most frequent Serbian word.
чија
"Чија" means "whose" in English.
The word "чија" here is an interrogative pronoun used to ask about ownership related to a feminine noun (књига).
Чија је ово књига?
Whose book is this?
The word "чија" functions as a relative pronoun referring to a feminine noun (жена), indicating possession.
На састанку је била жена чија је презентација била изванредна.
At the meeting, there was a woman whose presentation was extraordinary.
In this example, "чија" is again an interrogative pronoun used to inquire about possession, with the context adapting to a feminine noun (дужност).