Paperback vs. Softbound: What's the Difference?

A book having a flexible paper binding.

Not bound between hard covers

A book with flexible binding.

(of a book) With a cover of flexible paper rather than a rigid cardboard cover.

(of a book) Having flexible binding.

To issue or publish (a book) in a paperback edition.

A book with paper covers; - contrasted with hardback or hardcover.

Having a flexible binding; - of books. Contrasted to hardcover or hardbacked or hardbound.

A book with paper covers

(of books) having a flexible binding