This is the 770th most frequent Turkish word.
kocaelispor
Kocaelispor is the name of a Turkish football (soccer) club based in İzmit, Kocaeli.
Here, 'Kocaelispor' is used as a proper noun referring to a specific football team in Turkey.
Kocaelispor, Türkiye'nin sevilen futbol takımlarından biridir.
Kocaelispor is one of Turkey's beloved football teams.
In this sentence, 'Kocaelispor' is again a proper noun used in a possessive context to indicate the match of the football team named Kocaelispor.
Kocaelispor maçını izlemek için stadyuma gittik.
We went to the stadium to watch the Kocaelispor match.
Here, 'Kocaelispor' takes on the possessive suffix ('-un') to denote the players belonging to the team.