"Senry\u016B (\u5DDD\u67F3, literally 'river willow') is a Japanese form of short poetry similar to haiku in construction: three lines with 17 or fewer total morae (or \"on\", often translated as syllables, but see the article on onji for distinctions). Senry\u016B tend to be about human foibles while haiku tend to be about nature, and senry\u016B are often cynical or darkly humorous while haiku are more serious."@en .