Like the common cold, comparative essays can become catchy.  The object of the game is to compare one thing to another.  You may compare different views, different objects, different situations, different people, events, places etc… Clarity is important in this kind of writing, you must be able to get your point across.  Answer the question in a fashion that helps your audience understand you.  The construction site for this breed of essay is identical to the five paragraph essay, although most essays do follow this format.