How does poetry differ from prose in its use of language, rhythm, and line breaks?

Distinguishing poetry from prose is often compared to distinguishing rain from snow; while generally recognizable, the two can overlap in ways that defy rigid definition. However, poetry is formally characterized by its greater dependence on the line as a structural unit, which influences both its visual appearance and how it is read.12

Use of Language and Rhythm

While both poetry and prose utilize rhythm, poetry relies on a more highly organized, patterned recurrence of language features.3
* Poetry: Often employs meter—an abstract organization of stress, duration, or syllable count—to create rhythmic tension. In free verse, rhythm is instead derived from the systematic repetition of sounds, words, phrases, and the natural cadence of speech.3
* Prose: While prose exhibits rhythm, it is generally less fixed and highly organized than that of poetry; patterns in prose evolve and shift, rarely repeating except for specific emphasis.34

The Role of the Line

The use of the line is a primary formal distinction. Poetry’s arrangement on the page guides the reader’s pace and tone, often requiring an attention to the balance of the line in relation to breath and syntax. By contrast, prose typically follows a "straight" progression, focusing on conveying information without the structural constraints of poetic line breaks.215