Define "metaphor."

A metaphor is a figure of speech that makes a direct comparison between two unrelated things, implying that one thing is another to highlight a particular quality or characteristic. This form of expression allows for a deeper understanding of the subject being discussed, as it encourages readers to draw connections and visualize ideas in a more vivid way. For instance, saying "time is a thief" suggests that time steals moments from our lives, conveying a sense of loss without explicitly stating that.

The other options represent different literary devices. The second choice refers to similes, which do make comparisons but explicitly use "like" or "as." The third option describes hyperbole, a form of exaggeration used to emphasize a point. The last choice involves rhyme schemes, which relate to the pattern of rhymes used in poetry rather than a comparison of ideas. By understanding these distinctions, one can appreciate how metaphors enrich language and communication.