List: word usually written using kana alone

obsolete kanji  search-only kanji form  usually written using kana alone  noun  noun (generic) 

• seahorse, sea horse

popular  rarely used kanji form  JLPT N3  usually written using kana alone  adverb 

• by chance, by accident, accidentally, happen to (be, do), unexpectedly, casually
• occasionally, once in a while, now and then

search-only kanji form  usually written using kana alone  godan verb  godan verb (archaic)  verb (generic)  transitive verb 

• to cajole, to deceive, to seduce

irregular kanji usage  usually written using kana alone  noun  noun (generic) 

• ostrich (Struthio camelus)

rarely used kanji form  search-only kanji form  usually written using kana alone  adverb 

• in detail, with great care, completely, fully

usually written using kana alone  な adjective  adjective (generic) 

• round and cute (esp. of eyes)

usually written using kana alone  noun  noun (generic) 

• lever
• agent (causing something to happen), instrument, force
• assistant, helper

ateji  rarely used kanji form  usually written using kana alone  grammar  noun  noun (generic) 

• postpositions (in Japanese), particles

usually written using kana alone  な adjective  adjective (generic)  noun  noun (generic) 

• diligent, industrious, skillful, dextrous

usually written using kana alone  い adjective  adjective (generic) 

• sharp (words), harsh (manner, tone, etc.), hostile (mood, attitude, etc.), stinging, biting, cutting, barbed