* Literature implies writing: Literature, by definition, refers to written works, especially those considered to be of artistic or intellectual value.
* Specificity: Saying "written literature" is like saying "singing music" or "painted art." It's unnecessary to specify the medium when it's inherent to the concept.
Instead of "written literature," we can use more specific terms:
* Literary works: This is a general term for any work of literature.
* Books: This refers specifically to bound collections of written material.
* Novels, poems, essays, plays: These are specific genres within literature.
* Fiction, non-fiction: These are broad categories of literary works.
So, when talking about literature, it's usually best to avoid "written literature" and instead use more precise terminology.