Writers use words that add a vivid life description in the text. Often times the writer will use comparative imagery to draw a visualization of something related to what they are trying to convey so as to associate the meanings with the ideas being utilized for the comparative description. Two of these word types are Simile and Metaphor – A Simile will always have the words “like” or “as” in the comparison while a Metaphor uses abstract comparison by saying the first issue is exactly like the second issue (even though it is clearly not the exact same and emphasis of word choice for the comparison using metaphor will always provide intensity and influential imagery)
Example Simile: He acted just like a Devil when he was angry.
Example Metaphor: John is the Devil in Disguise when you piss him off.