What defines repetition in a poem?

Repetition in a poem refers to the deliberate use of words, phrases, sounds, or structures that are repeated for emphasis or to create a specific effect. It is a literary device used to reinforce ideas, create rhythm, evoke emotions, or emphasize certain themes or images within the poem. Repetition can occur at various levels, such as repetition of words, lines, stanzas, sounds, or patterns, and it helps to shape the overall structure and impact of the poem.