This is the 14281st most frequent Turkish word.
odasına
"To his/her/its room" or "to their room."
Here 'odasına' indicates direction towards Ali's own room.
Ali, kitaplarını odasına götürdü.
Ali took his books to his room.
'Odasına' shows movement towards Fatma's personal room.
Misafir gelince Fatma hemen odasına geçti.
When the guest arrived, Fatma immediately went to her room.
Here 'odasına' denotes the destination, specifically another's room, emphasizing possession.