A poem is a form of literary expression that uses rhythmic and often metaphorical language to convey emotions, ideas, or stories. Poems can vary in structure, including free verse, sonnets, and haikus, each with its own rules regarding line length, rhyme, and meter. They often focus on themes such as love, nature, and human experiences. Poetry has been a part of human culture for centuries, with famous poets like William Shakespeare and Emily Dickinson contributing significantly to the art form. Poems can be written for various purposes, including personal reflection, social commentary, or simply to entertain. They are often recited aloud, enhancing their emotional impact.