This is the 7128th most frequent Turkish word.
dünyasına
"To his/her/its world" or "to the world of."
Here, 'dünyasına' refers to the figurative 'world' or realm of books, indicating a thematic domain.
Kitap dünyasına adım attı.
He stepped into the world of books.
In this instance, 'dünyasına' represents the domain or industry related to fashion.
Moda dünyasına yakın bir meslek seçti.
She chose a profession close to the fashion world.
Here, 'dünyasına' signifies the creative, imaginative realm associated with children.