1 has different meanings.
Poetry: Poetry is one of the basic literary genres.
Song: Song is a poetic style.
Ballad: Ballad is a genre of folk literature.
Proverbs are simple, popular and meaningful sentences circulated by people.
2. Different priorities
Poetry: Poetry is mainly reciting.
Song: Songs are mainly sung.
Folk songs: Most folk songs are for children.
A fixed sentence circulating among the masses.
3. Different characteristics
Poetry: Poetry is characterized by lyrical beauty.
Song: A song is characterized by a poem, which can be sung by music.
Ballads: Ballads are characterized by rhyming and often express some interesting little things.
Proverbs are characterized by reflecting universal and profound truths.