A poem form is a type of structure used to organize a poem. Two examples of poem forms are the ODE and the sestina. An ODE is a lyrical poem that is usually written in praise of something or someone. It often has a formal structure with a specific rhyme scheme. A sestina is a poem composed of six stanzas of six lines each, followed by a three-line envoy. It is characterized by repeating end words in a set pattern throughout the poem.