Books or written works (formal term); often used in academic or official contexts, as in words like 'library' (図書館).
研究に必要な図書を図書館で探した。
I looked for the books needed for my research at the library.
大学の図書は専門的な図書が充実している。
University libraries are well stocked with specialized books.
図書の貸し出し手続きを行ってください。
Please complete the loan procedure for the books.