List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• rook (species of crow, Corvus frugilegus)

usually written using kana alone  noun  noun (generic) 

• Eurasian jay (Garrulus glandarius)

search-only kanji form  usually written using kana alone  expression  noun taking the genitive case particle の  adjective (generic) 

• just right, ideal, perfectly suitable
• fetch!, bring me ...

usually written using kana alone  noun  noun (generic) 

• Sagittaria trifolia var. edulis (edible variant of threeleaf arrowhead)

usually written using kana alone  noun  noun (generic) 

• sirenian (any aquatic mammal of order Sirenia, incl. manatees, and dugongs), sea cow

usually written using kana alone  noun  noun (generic) 

• sea slug (various orthogastropod species, esp. of order Nudibranchia), nudibranch

usually written using kana alone  noun  noun (generic) 

• calla (Zantedeschia aethiopica)

usually written using kana alone  noun  noun (generic) 

• stag seaweed (Codium fragile), green sea fingers, dead man's fingers, felty fingers, forked felt-alga, sponge seaweed, green sponge, green fleece, oyster thief

usually written using kana alone  noun  noun (generic) 

• black-tailed gull (Larus crassirostris)

usually written using kana alone  noun  noun (generic) 

• sea snake
• worm eel (Ophichthidae spp.), snake eel