What's the difference between myths, folk stories and novels?

Myth explains a natural phenomenon through an extraordinary story in ancient times. Such as: Pangu Tiankai, the goddess of mending heaven, Shennong heartless grass, etc.

Folk stories are passed down from mouth to mouth, and a large part of them coincide with myths. Easily confused. Such as Yu Gong Yi Shan, Jiuse Deer, Meng Jiangnv Crying at the Great Wall, etc.

Novels are very different from myths and folk stories. Novels generally have authors, myths and folk stories. Novels are generally very long, with a look back. Such as: Journey to the West, Water Margin, Romance of the Three Kingdoms.