This is the 4132nd most frequent Turkish word.
kiev
"Kiev" is not a Turkish word; it refers to the capital city of Ukraine.
In this sentence, 'Kiev' is used as a proper noun referring to the capital city of Ukraine.
Kiev çok güzel bir şehir.
Kiev is a very beautiful city.
Here, 'Kiev' represents the subject of investigation, again referring to the city.
Kiev hakkında araştırma yapıyorum.
I am doing research about Kiev.
In this example, 'Kiev' is the destination of the planned trip; it is used to describe where the action will take place.