A metaphor is a figure of speech that makes a comparison between two unlike things, suggesting that one thing is another. For example, saying "time is a thief" implies that time steals moments from our lives, even though time isn't literally a thief. This helps us understand complex ideas by relating them to familiar concepts. Metaphors are commonly used in literature, music, and everyday language. When someone says, "the world is a stage," they mean that life is like a performance where everyone plays a role. By using metaphors, we can express emotions and ideas more vividly, making our communication richer and more engaging.