Books are classified by a [[hierarchy]]. The two most general categories of this hierarchy are [[fiction]] - meaning an invented or feigned narrative, an imaginative form of narrative - and [[non-fiction]] - a composition that its authors believe to be truthful. | Books are classified by a [[hierarchy]]. The two most general categories of this hierarchy are [[fiction]] - meaning an invented or feigned narrative, an imaginative form of narrative - and [[non-fiction]] - a composition that its authors believe to be truthful. |