This is the 5232nd most frequent Turkish word.
işlevi
"İşlevi" means "its function" or "function" in English.
In this sentence, 'işlevi' is used to refer to the specific functionality or purpose of the device.
Bu cihazın mükemmel bir işlevi var.
This device has an excellent function.
Here, 'işlevini' refers to the role or purpose that the program serves.
Programın işlevini tam olarak anlamadım.
I couldn't fully understand the function of the program.
In this case, 'işlevi' is referring to the specific action or task that the button performs.