A metaphor is using a name for something that is not literally applicable, to convey an idiomatic subtext.
Dreams are often metaphors, too.
A Parable is also a metaphor. Using an imaginary story to illustrate deeper concepts, the parable teller imparts wisdom in ways that are easier to remember.
Our language consists entirely of metaphors, just try to find a word that doesn't describe something. The word 'Consciousness', for example, is a metaphor for something we try to describe, but it still doesn't quite explain it.
Dreams, the Morphogenetic Field, and the Fractal of History ....