How does the structure of a poem contribute to its impactfulness?

Repetition, rhyme, metaphors, similes, etc all affect the way a poem is delivered. The more relatable or engaging a poem is, the more impact is has on readers. Being short and direct also allows a poem to be more eye-catching, being quick and easy to read. Large words allow the poem to seem professional or intellectual, while simple, small words make the poem easier to read.