List: word usually written using kana alone

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

• remora (any fish of family Echeneidae), suckerfish, sharksucker
• live sharksucker (Echeneis naucrates)

usually written using kana alone  noun  noun (generic) 

• red-crowned crane (Grus japonensis), Japanese crane
• red-cap oranda (goldfish)
• Tanchō (koi variety)
• having a red crest or patch on the head (of a bird, fish, etc.)

usually written using kana alone  noun  noun (generic) 

• domestic pigeon, feral pigeon

usually written using kana alone  food, cooking  noun  noun (generic) 

• namasu, dish of raw fish and vegetables seasoned in vinegar

usually written using kana alone  noun  noun (generic) 

• maggot, larva, grub

usually written using kana alone  noun  noun (generic) 

• Oriental turtle dove (Streptopelia orientalis), rufous turtle dove

usually written using kana alone  noun  noun (generic) 

• thrush (esp. the dusky thrush, Turdus naumanni)

usually written using kana alone  noun  noun (generic) 

• brown-eared bulbul (Hypsipetes amaurotis)

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

• oleaster (any plant of genus Elaeagnus), silverberry

rarely used kanji form  usually written using kana alone  expression 

• always, all the time