This is the 8154th most frequent Turkish word.
maria
The word "Maria" is not inherently Turkish; it is a common proper name of Latin origin and does not have a specific meaning in Turkish apart from being used as a name.
Here, 'Maria' is used as a proper noun referring to a person, the subject of the sentence.
Maria yeni bir kitap yazıyor.
Maria is writing a new book.
In this sentence, 'Maria'nın' denotes possession, indicating that the book belongs to Maria.
Maria'nın yeni kitabı çok ilginçmiş.
Maria's new book is said to be very interesting.
Here, 'Maria' is part of a phrase 'adında', meaning 'named Maria', referring to the name of a writer.