List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• maize weevil (Sitophilus zeamais)

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

• good-for-nothing, parasite, deadbeat, loafer, drone, idler

usually written using kana alone  noun  noun (generic) 

• horned frog (Ceratophrys spp.)

usually written using kana alone  noun  noun (generic) 

• red avadavat (Amandava amandava), strawberry finch, red munia

usually written using kana alone  noun  noun (generic) 

• long-tailed rosefinch (Uragus sibiricus)

usually written using kana alone  noun  noun (generic) 

• red-crowned crane (Grus japonensis), Japanese crane

rarely used kanji form  usually written using kana alone  adverb 

• at once, there and then, immediately

usually written using kana alone  noun  noun (generic) 

• cast iron plant (Aspidistra elatior)
• baran, green plastic garnish (orig. made from leaves) used in lunch boxes, with sushi, etc.

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

• char (esp. the Japanese char, Salvelinus pluvius), charr

usually written using kana alone  noun  noun (generic) 

• alpine accentor (Prunella collaris)