List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• butterfish (any fish of family Stromateidae, esp. species Pampus punctatissimus), harvestfish, rudderfish

usually written using kana alone  colloquial  noun  noun (generic) 

• copy cat

usually written using kana alone  noun  noun (generic) 

• red sea bream (Pagrus major), Japanese sea bream, red tai, porgy

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

• tapeworm

usually written using kana alone  noun  noun (generic) 

• Pediculus humanus (species of louse that infests humans), body louse, body lice, head louse, head lice

popular  rarely used kanji form  JLPT N3  usually written using kana alone  noun  noun (generic) 

• rubbish, trash, garbage, refuse, litter

usually written using kana alone  adverb 

• extremely, exceedingly, deeply
• painfully

usually written using kana alone  expression  adverb 

• exceedingly

popular  usually written using kana alone  noun  noun (generic)  martial arts  slang  derogatory  noun (suffix) 

• sauce (esp. soy or mirin-based dipping sauce)
• hanging, something hanging (flap, lappet, etc.)
• (kendo) loin guard
• kanji radical enclosing the top-left corner of a character
• woman
• -ass, -head

usually written using kana alone  noun  noun (generic) 

• pond skater (any insect of family Gerridae), water strider