A metaphor is a figure of speech that compares two unlike things without using "like" or "as." It suggests that one thing is another, helping to create vivid imagery and deeper understanding. For example, saying "time is a thief" implies that time steals moments from our lives, just as a thief would take possessions. This comparison helps us grasp the fleeting nature of time. Metaphors are commonly used in literature, poetry, and everyday language. They can make descriptions more engaging and relatable. For instance, calling someone a "night owl" suggests they stay up late, evoking the image of an owl that is active at night. This creative language enriches communication and adds layers of meaning.