This has been put on hold as "primarily opinion-based".
I'd like to understand why?
It's not opinion, but fact that:
- the dictionary definition of literature includes merit of the writing and also non-fiction.
- the dictionary definition of fiction includes non-written works (the definition says either mostly or 'as (and example)', not entirely, and in common parlance, Star Wars and Star Trek are both fiction) (3. Another comment suggest novel which has another condition that the work must be long, usually 40k words plus)
The objection raised in the comments was that "It seems you are looking for a word that has no alternative meanings, in no cases, no contexts, no circumstances. I wish you the very best of luck with that in English."
But I'm not sure how that makes the question either opinion-based, or not well-researched, even if the answer is simply that such a word doesn't exist.
Can someone help me with what exactly is the issue with the question as it is framed?
ETA with clarification after Mitch's response: I was familiar with the issue with SWR on the site, but I assumed from this particular exchange that highly specific SWRs such as "Is there a word to describe a highly desirable cursed treasure?" are the kind of SWRs that are ok. Is this no longer applicable here?