A poem is a collection of words which helps a writer express his inner feelings and thought.
Irony is the use of words that have an opposite meaning to what the writer or speaker has in mind and is usually used for dramatic effect or humor.
Please note that your question is not complete so i would be giving you a general overview that should help you arrive at the correct answer.
Point of view is simply how a person chooses to narrate an event or story and the three main types of point of view are the first, second and third person point of view
There are three main types of irony which are dramatic, verbal and situational irony.
Irony helps a writer's point of view by showing that he does not mean what he say, which can help to ridicule a person or situation.
