Drama is a specific mode of fiction represented in performance i.e. play, opera, mime, ballet, etc., performed in a theatre, or on radio or television. Considered a genre of poetry dramatic mode has been contrasted with the "epic and the lyrical modes ever since Aristotle's Poetics (c. 335 BC) the earliest work of dramatic theory."

Drama

A poem is a literary work that is written by a poet.

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Poetry is a form of literature that uses aesthetic and often rhythmic qualities of language to evoke symbolism and includes a prosaic ostensible meaning. 

Poetry

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Poems

Prose is a form of written or spoken language that typically exhibits a natural flow of speech and grammatical structure. "The word "prose" first appears in English in the 14th century." It differs from most traditional poetry, where the form has a regular structure, consisting of verse based on meter and rhyme. However, developments in twentieth-century literature, such as free verse, concrete poetry, and prose poetry, have led to the idea of poetry and prose as two ends on a spectrum rather than distinct from each other. 

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