A metaphor is not just a simple comparison, that would actually be a simile.. . With a metaphor you use something other than the subject to describe the subject. For instance, the butterfly wings were leaves falling from a tree. This is an example of how a metaphor is used in poetry and maybe prose as well. . . Another example is a symbol. Most symbolisms will be metaphors. For example, "heavy is the head that wears the crown." This is, of course, the famous metaphor for the responsibilities and difficulties that come with being someone in a high position (king especially, or a president) making decisions that will affect many. In turn, it is also a symbolism of someone in this position not being able to sleep due to the decisions he has to make or have made.. . I hope this makes sense to you. Similes use the word 'like' and metaphors use the word 'as'. . . A color dark as the night.. . It rained like cats and dogs.. . . . . . . . . . . . . . . .