General:
* Writing
* Books
* Texts
* Writings
* Printed matter
* Reading material
Specific to literary works:
* Fiction
* Poetry
* Drama
* Prose
* Verse
* Classics
* Literary works
* Literary creations
More abstract:
* Art
* Culture
* Knowledge
* Imagination
* Expression
The best synonym for "literature" will depend on the specific context and the nuance you want to convey.