List: out-dated or obsolete kana usage

gikun or jukujikun  obsolete reading  usually written using kana alone  noun  noun (generic) 

• sea cucumber (Holothuroidea spp.)

obsolete reading  rarely used kanji form  usually written using kana alone  noun  noun (generic) 

• eared seal (esp. the California sea lion, Zalophus californianus), sea lion

obsolete reading  noun  noun (generic) 

• beginning of the world, creation

obsolete reading  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic)  Buddhism 

• Apocrypha (i.e. as opposed to the Biblical canon)
• non-Buddhist writings (esp. Confucian writings)

obsolete reading  noun  noun (generic) 

• dried fish (or shellfish, etc.)

obsolete reading  noun  noun (generic) 

• leisure

obsolete reading  search-only kanji form  noun  noun (generic)  historical term 

• traditional married woman's hair style with an oval chignon on top
• type of men's hairstyle during the Edo period

obsolete reading  search-only kanji form  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• outcome (of a course of events), consequence, tendency, trend

obsolete reading  usually written using kana alone  noun  noun (generic) 

• (common) millet (Panicum miliaceum), proso millet

obsolete reading  usually written using kana alone  noun  noun (generic) 

• great burdock (Arctium lappa), gobo