List: word usually written using kana alone

obsolete reading  usually written using kana alone  noun  noun (generic) 

• louse (esp. a sucking louse), lice

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

• very thorough search (for contraband, escaped convict, etc.), fine-tooth-comb search, exhaustive search, scouring

usually written using kana alone  noun  noun (generic) 

• black fly (any insect of family Simuliidae), gnat

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

• earthworm, worm

usually written using kana alone  noun  noun (generic) 

• house centipede (Scutigeromorpha spp.)
• contemptible person, skunk, wretch, louse

gikun or jukujikun  usually written using kana alone  noun  noun (generic) 

• slug

usually written using kana alone  noun  noun (generic) 

• basket clam (Corbiculidae spp.), freshwater clam, freshwater mussel

usually written using kana alone  noun  noun (generic) 

• sorghum (Sorghum bicolor), Indian millet

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

• lizard
• skink lizard (Scincidae spp.)

obsolete reading  usually written using kana alone  noun  noun (generic)  abbreviation  derogatory 

• bat (Chiroptera spp.)
• umbrella
• opportunist, turncoat