This is the 872nd most frequent Azerbaijani word.
harada
"Where"
The word "harada" is used to form a question asking about the location of an action, in this case, finding the book.
Kitabı harada tapdın?
Where did you find the book?
Here, "harada" is used to ask about the location or place suitable for an action, placing an object.
Onu harada qoya bilərəm?
Where can I put it?
The usage of "harada" in this sentence determines the location of the event, the birthplace of someone.