This is the 7730th most frequent Turkish word.
kocaeli̇
Kocaeli is a province in northwestern Turkey.
Here, 'Kocaeli' is used as a proper noun referring to a specific city in Turkey.
Kocaeli Türkiye'nin en büyük sanayi şehirlerinden biridir.
Kocaeli is one of the largest industrial cities in Turkey.
In this sentence, 'Kocaeli' specifies a location, indicating the city where the action will take place.
Kocaeli'nde bu yaz bir ev kiralamayı düşünüyoruz.
We are considering renting a house in Kocaeli this summer.
Here, 'Kocaeli' is part of the name of an institution, 'Kocaeli University'.