This is the 9982nd most frequent Polish word.
austriacki
Austriacki: Austrian.
In this sentence, 'austriacki' is used as an adjective to describe the origin of the cheese, indicating it comes from Austria.
On kupił austriacki ser.
He bought Austrian cheese.
Here, 'austriacki' describes the architectural or ownership style of the house, linking it to Austria.
Ona mieszka w austriackim domu.
She lives in an Austrian house.
In this context, 'austriacki' is used to connect the word 'culture' to Austria, indicating the topic of the book relates to Austrian cultural aspects.