書庫

1. Origins, structure, and basic meaning

• Structure: Written 書庫 and read しょこ, it is a dedicated library or institutional storage area for books and documents.
• Basic usage: It holds old materials underground and is where a librarian retrieves a reserved book.

2. Common pitfalls and similar expressions

• Stacks rather than reading room
  • The space is for organized storage and staff access, not primarily for patrons to sit and read.