Poetry in question refers to modern poetry, including metrical poems and quatrains. There are sixteen metrical forms. Li Shangyin's Chang 'e belongs to "the first sentence is pursed into rhyme". Formally speaking, modern poetry has four or eight sentences, each with a difference of five words and seven words, so it looks "neat". (neatness has nothing to do with duality)
There are more than 1000 forms of words, each with its own epigraph (format name). The epigraph is the same, and some have several specific formats. "Sauvignon Blanc" is the name of the inscription, and all the words written according to this inscription are called "Sauvignon Blanc". Sauvignon Blanc, also known as "Double Red Bean", evolved from Tang Qu, which is a 36-word ditty with three levels and one rhyme before and after. The biggest difference between words and poems in form is that the appearance of poems is neat, and the appearance of words is different. But the rules of using words are strict, not casual. Writing words is called "lyrics" because the rules are strict and need to be filled in according to the rules.