List: word usually written using kana alone

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

• Mecopoda nipponensis (species of katydid)

usually written using kana alone  noun  noun (generic) 

• black-crowned night heron (Nycticorax nycticorax), night heron

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

• Japanese pond smelt (Hypomesus nipponensis), wakasagi

usually written using kana alone  noun  noun (generic) 

• drainage, draining
• sales

usually written using kana alone  noun  noun (generic) 

• varied tit (species of titmouse, Poecile varius)

usually written using kana alone  noun  noun (generic) 

• golden-rayed lily (Lilium auratum)

usually written using kana alone  noun  noun (generic) 

• garden sorrel (Rumex acetosa), cock sorrel, sour dock

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

• cowrie (esp. the chocolate cowrie, Mauritia mauritiana), cowry

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

• plantain (esp. Asian plantain, Plantago asiatica)

gikun or jukujikun  rarely used kanji form  usually written using kana alone  noun  noun (generic) 

• sloth (animal)