The document discusses extended metaphors. It provides an example of an extended metaphor from a poem comparing the author and humans to weeds and flowers. While weeds experience freedom, flowers experience the standards of society. It then discusses metaphor essays and how metaphors can apply words or phrases not literally applicable to an object or action. Extended metaphors can encompass paragraphs, stanzas, or entire works comparing them to something else, like Romeo and Juliet comparing Juliet to the sun.