HAIKU collection

Haiku  is a very short form of Japanese poetry. It is typically characterised by three qualities: 

• The essence of haiku is "cutting". This is often represented by the juxtaposition of two images or ideas and a kireji ("cutting word") between them, a kind of verbal punctuation mark which signals the moment of separation and colors the manner in which the juxtaposed elements are related.
  
  
• Traditional haiku consist of 17 on (also known as morae), in three phrases of 5, 7, and 5 on respectively.
  
  
• A kigo (seasonal reference), usually drawn from a saijiki, an extensive but defined list of such words.