haiku
a Japanese poem of seventeen syllables, in three lines of five, seven, and five, traditionally evoking images of the natural world
stanza
a group of lines forming the basic recurring metrical unit in a poem; a verse.
free verse
poetry that does not rhyme or have a regular meter
quatrain
a stanza of four lines, especially one having alternate rhymes
cacophony
a harsh, discordant mixture of sounds
rhyme
correspondence of sound between words or the endings of words, especially when these are used at the ends of lines of poetry
limerick
a humorous, frequently bawdy, verse of three long and two short lines rhyming aabba
alliteration
the occurrence of the same letter or sound at the beginning of adjacent or closely connected words
sonnet
a poem of fourteen lines using any of a number of formal rhyme schemes, in English typically having ten syllables per line
caesura
a pause near the middle of a line.
consonance
the recurrence of similar sounds, especially consonants, in close proximity
ballad
a poem or song narrating a story in short stanzas. Traditional ballads are typically of unknown authorship, having been passed on orally from one generation to the next as part of the folk culture