This is the 4693rd most frequent Turkish word.
casusluk
Espionage.
Here, 'casusluk' is used as a noun to denote the act of spying.
Casusluk yapmak suçtur ve yasal olarak cezalandırılır.
Spying is a crime and is legally punishable.
Here, 'casusluk' is used to describe the genre of movies related to espionage.
Casusluk filmleri her zaman dikkatimi çeker.
Spy movies always catch my attention.
In this sentence, 'casusluk' is utilized to describe stories or narratives associated with espionage.