This is the 13716th most frequent Turkish word.
köşeden
"From the corner."
Here, 'köşeden' means 'from the corner,' specifying the origin of the cat's movement.
Köşeden bir kedi çıkıp pencereye tırmandı.
A cat came out from the corner and climbed to the window.
In this example, 'köşeden' describes the act of turning from the corner to another direction.
Köşeden dönünce büyük bir park göreceksiniz.
When you turn the corner, you will see a large park.
Here, 'köşeden' is used to indicate the source of the sounds, 'from the corner.'