What is simile and metaphor

Simile is when you use like and as describing something

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

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.