This is the 415th most frequent Malay word.
buku
Book.
In this sentence, 'buku' refers to a physical object, a 'book', specifically a storybook.
Saya membaca buku cerita setiap malam.
I read a storybook every night.
Here, 'buku' signifies a 'notebook', showing its usage as a term for various books used for documentation or writings.
Dia menyimpan buku catatan di dalam begnya.
She keeps a notebook in her bag.
This usage of 'buku' points to a specific kind of book, likely one of special mention or note.