古こ書しょ

noun

old book; rare book; classic

Refers to books that are old, antiquarian, or of historical value, not simply secondhand. Often used in contexts like 古書店 (antiquarian bookstore).

• 彼かれは古こ書しょを集あつめるのが趣しゅ味みだ。

  His hobby is collecting old books.

• この古こ書しょ店てんには貴き重ちょうな古こ書しょがたくさんある。

  This antiquarian bookstore has many valuable old books.

noun

secondhand book; used book

Used for books that are pre-owned, regardless of age. Often interchangeable with 古本, but 古書 can sound slightly more formal or refer to older used books.

See also: 古本

• 駅えき前まえの古こ書しょ店てんで安やすい古こ書しょを買かった。

  I bought a cheap used book at the secondhand bookstore near the station.