Sophisticated light verse - a poetic term for social or familiar poetry, which was originally borrowed from the French, and has now come to rank as an English expression.
Poets writing in this vein include Charles Stuart Calverley, Frederick Locker Lampson, and John Betjeman.

Free verse - unrhymed verse without a consistent metrical pattern. For instance, Walt Whitman's "Leaves of Grass."

The Villanelle has 19 lines, 5 stanzas of three lines and 1 stanza of four lines with two rhymes and two refrains.
The 1st, then the 3rd lines alternate as the last lines of stanzas 2,3,and 4, and then stanza 5 (the end) as a couplet. It is usually written in tetrameter (4 feet) or pentameter.
For example, Oscar Wilde's "Theocritus,"
W.H. Auden's "Villanelle,"
Dylan Thomas' "Do not Go Gentle into that Good Night."

A form of the medieval French lyric. It consists of short lines in stanzas with only two rhymes, where the final rhyme of one stanza becomes the main rhyme of the next.

A literary and artistic movement occurring between 1912-1915 which attacked the sentimentality of 19th Century art. Ezra Pound's strong literary support for the Vorticist ideals became the prime source of inspiration for artists.