蔵書（ぞうしょ、zousho）
- book collection

The Japanese word 蔵書 means "a collection of books," "library," or "books owned" by an individual or an institution. It refers to the amassed books. It can describe a personal library, a library within a building, or the books held by an organization such as a school or a publishing house. The word emphasizes the entirety of the books as a unified group.

⚫︎彼の蔵書はとても豊富だ。 Translation: His collection of books is very extensive. ⚫︎大学の蔵書は幅広い分野をカバーしている。 Translation: The university's library covers a wide range of fields. ⚫︎彼女は自宅に立派な蔵書を持っている。 Translation: She has a magnificent collection of books at her home.

You can use 蔵書 when you want to talk about a collection of books, whether it's a personal collection, a library's holdings, or the books possessed by a particular entity. It is appropriate in both formal and informal settings. You can use it to talk about the quantity, quality, or subject matter of the books. It is used to express that someone has a lot of books and is similar to words like "library" or "collection". It's a common word, but it carries a slightly more formal feel compared to simply saying 本 (books).

蔵書 is written using the kanji 蔵 (zou) meaning "storehouse" or "warehouse", and 書 (sho) meaning "books" or "writings". The word is typically written in kanji. ・Reading: ぞうしょ (zousho) in hiragana. There are no variations in the okurigana.

⚫︎ 図書 (toshō) - library, books (more general) ⚫︎ 書籍 (shoseki) - books, publications ⚫︎ 書物 (shomotsu) - books, writings

There isn't a direct antonym, as 蔵書 focuses on the collection itself. However, you could use words that negate the idea of having books, such as: ⚫︎ 無本 (muhon) - without books (in a figurative sense, implying a lack of knowledge)

彼は蔵書を整理するために、新しい本棚を買った。 ・Translation: He bought a new bookshelf to organize his book collection. ・Explanation: This sentence describes the action of organizing a personal library, using the word 蔵書 to refer to the collection of books.

その図書館の蔵書は、歴史に関する貴重な資料を多く含んでいる。 ・Translation: The library's collection includes many valuable historical materials. ・Explanation: This sentence describes the contents of a library's book collection, highlighting the value of its holdings.

The word 蔵書 is a compound word. 蔵 originally meant "storehouse" or a place where things are kept. 書 refers to written materials or books. Therefore, 蔵書 literally means "books stored," implying a collection of books that are being kept or preserved.