There are many types of poetry, and not all of them rely on rhyme. Here are some examples:
* Free verse: This type of poetry doesn't follow strict rules of rhyme or meter. It allows for a free flow of thought and expression.
* Blank verse: This uses unrhymed iambic pentameter, which means five pairs of unstressed and stressed syllables per line.
* Concrete poetry: This focuses on the visual appearance of the poem on the page, often with words forming shapes or images.
* Haiku: This traditional Japanese form consists of three lines with a 5-7-5 syllable structure, but doesn't require rhyme.
Rhyme is a tool, not a requirement. It can be used to create a sense of musicality, rhythm, or to emphasize certain words or ideas. But it's certainly not necessary for a poem to be effective or impactful.