List: word usually written using kana alone

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

• Buddha

popular  gikun or jukujikun  rarely used kanji form  JLPT N2  usually written using kana alone  noun  noun (generic) 

• screw
• key (of a clock, watch, etc.), spring

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

• as (it is), remaining (in a state), keeping (the same), leaving (unchanged)
• with (e.g. one's eyes closed, the light on), while (e.g. standing, alive), as
• as (one pleases, one is told, etc.), according to
• sic

rarely used kanji form  JLPT N1  usually written using kana alone  humble language  noun  noun (generic)  colloquial 

• son
• punk, brat
• penis

rarely used kanji form  onomatopoeic or mimetic word  usually written using kana alone  adverb  adverb taking the と particle 

• carefully, closely, attentively, profoundly, deeply, at length

popular  rarely used kanji form  JLPT N3  usually written using kana alone  conjunction  interjection 

• well, now, then

usually written using kana alone  noun  noun (generic) 

• rickets
• person with rickets, hunchback

usually written using kana alone  godan verb  godan verb (archaic)  verb (generic)  transitive verb 

• to gouge, to hollow out, to bore, to excavate, to scoop out
• to greatly perturb, to cause emotional pain
• to get to the bottom of things, to relentlessly bring the truth to light

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

• mosquito larva, wriggler, maggot

usually written using kana alone  godan verb  godan verb (archaic)  verb (generic)  intransitive verb 

• to boil, to seethe
• to be oppressed by heat