library; book collection
Refers to a collection of books, often a personal or institutional library. Can also denote a curated series of publications.
My grandfather's library has many valuable books.
This publisher puts out a collection of classical literature.
paperback book; bunkobon
Abbreviation of 文庫本. Refers to the small-format paperback books common in Japan, often part of a publisher's series.
See also: 文庫本 (ぶんこぼん)
I like reading paperback books on the train.
I bought this novel as a paperback.
The novel will come out in paperback next year.
He read the book in the paperback edition.
paperback edition; bunko edition