Stanza form refers to the arrangement of lines in a poem, grouped together to create a specific structure. Each group of lines, called a stanza, can vary in length and may follow a particular rhyme scheme or meter. Common types of stanzas include couplets (two lines), quatrains (four lines), and sestets (six lines). Stanzas help organize thoughts and ideas, making the poem easier to read and understand. They can also enhance the poem's rhythm and musicality. Poets often use stanza form to convey emotions or themes more effectively, allowing for a clearer expression of their artistic vision.