• Sonnet:- The word sonnet comes from the Italian sonetto, meaning “little song.”- A lyric poem of fourteen iambic pentameter lines.- Often, sonnets use iambic pentameter: five sets of unstressed syllables followed by stressed syllables for a ten-syllable line.- Sonnets were invented by the Italian poet Giacomo da Lentini during the 1200s.• Types of Sonnets:- Italian or Petrarchan Sonnet: - English or Shakespearean Sonnet- Spenserian: - Miltonic,- Occitan Sonnets,- Caudate Sonnets,- Curtal Sonnets.Source: literarydevices.net