Verse, stanzas and rhyme
Free verse – varying line and stanza lengths determined by the content. Don’t particularly rhyme. Most submissions to Verbatim fall into this category.
Blank verse – Lines of equal syllabic length (especially 8-12) with no end rhymes. Breaks are infrequent and irregular.
Stanzas – Verses of equal length, more than 2 lines each.
Couplets – Verses of 2 lines each which usually rhyme (we overlook that for found poetry).
Rhyme – An additional tag for any poem that has noticeable end rhymes.
Haiku (17 or fewer) – 5-7-5 syllables max. Unrhymed. About nature, with a seasonal reference and a clear semantic break.
Senryu (17 or fewer) – 5-7-5 syllables max. Unrhymed. About human nature, usually comical.
Distich (20) – Single couplet, ideally 2 rhyming 10-syllable lines.
Cinquain (22) – 2-4-6-8-2 syllables. Unrhymed.
Tanka (31 or fewer) – 5-7-5-7-7 syllables max. Unrhymed. Subject traditionally breaks into upper half and final couplet.
Limerick (34) – Usually 8-8-5-5-8 with a strong, comical rhythm and subject. Rhymes a-a-b-b-a.
Naga-uta (43, 55, 67, 79, 103) – A longer tanka, alternating 5-7 until the end couplet of 7s. Unrhymed.
Sijo (44-46) – 3 lines of 14-16 syllables, totalling 44-46. Unrhymed. Lines are theme, elaboration, counter-theme, each with a mid-line break.
Nonet (45) – 9-8-7-6-5-4-3-2-1 syllables. Often rhymes.
Sonnet (140) – 14 lines of 10 syllables. Shakespearean sonnets rhyme a-b-a-b c-d-c-d e-f-e-f g-g. Italian sonnets often rhyme a-b-a-b a-b-a-b c-d-e-c-d-e.
Acrostic – Regular lines, the first letter of each spelling out a phrase.
Cento – Assembled from lines of other poets.
Clerihew – Four comical lines rhymed a-a-b-b. The first line is the subject’s name.
Concrete poem – The visual layout forms a shape that is part of the poem’s meaning.
Nursery rhyme – Simple rhyming verse for children, often with a subtext.
Prose poem – No line breaks –the poetic matter shines through a block of prose.
Skeltonic verse – Short, rhyming, rhythmical lines create a comical tumbling effect.
Song – Lines arranged to be sung, e.g. with a repeated chorus.