A is a list of kigo (seasonal terms) used in haiku and related forms of poetry. An entry in a saijiki usually includes a description of the kigo itself, as well as a list of similar or related words, and some examples of haiku that include that kigo. A kiyose is similar, but does not contain sample poems. Modern saijiki and kiyose are divided into the four seasons and New Year, with some containing a further section for seasonless (muki 無季) topics. Each seasonal section is further divided into a standard set of categories, each containing a list of relevant kigo. The most common categories are:

• The Season
• The Heavens
• The Earth
• Humanity
• Observances
• Animals
• Plants