This is the 746th most frequent Turkish word.
sahibinin
"Of its/her/his owner."
Here, "sahibinin" specifies "of the owner of the car," with the prefix "arabanın" indicating what the ownership applies to. The structure connects the two nouns possessively.
Arabanın sahibinin kim olduğu henüz bilinmiyor.
It is not yet known who the owner of the car is.
In this example, "sahibinin" refers to "of the homeowner," where the root word "sahibi" (owner) is connected to "ev" (home) and marked with the genitive case suffix "-nin."
Ev sahibinin izni olmadan giriş yapmak yasaktır.
Entering without the homeowner's permission is prohibited.
In this sentence, "sahibinin" means "of the owner," indicating possession. The suffix "-nin" marks the genitive case, showing that the voice belongs to the owner.