In Qur'an the words qasas and hadith are at times used in meanings that are close to each other. For example: the use of qasas as in story-narration:
We narrate to you, [O Muhammad], the best of stories (qasas) in what We have revealed to you of this Qur'an although you were, before it, among the unaware. —12:3
Has not there come to you the story (hadith) of Moses?
Following the theory that Allah would never use words randomly, has the scholars explained difference between these two words when they are used in the above sense? What is the difference exactly?