buku

In a sentence

• Saya membaca buku cerita setiap malam.

  I read a storybook every night.

  In this sentence, 'buku' refers to a physical object, a 'book', specifically a storybook.

• Dia menyimpan buku catatan di dalam begnya.

  She keeps a notebook in her bag.

  Here, 'buku' signifies a 'notebook', showing its usage as a term for various books used for documentation or writings.

• Buku itu sudah lama tidak dicetak lagi.

  That book has not been printed anymore for a long time.

  This usage of 'buku' points to a specific kind of book, likely one of special mention or note.