What is simile and metaphor

A simile a figure of speech involving the comparison of one thing with another thing of a different kind, used to make a description more emphatic or vivid while using like or as. A metaphor is a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable.

Simile is when you use like and as describing something

Metaphor is when you don't use like or as describing something