List: word usually written using kana alone

rarely used kanji form  usually written using kana alone  godan verb  godan verb (archaic)  verb (generic)  intransitive verb 

• to boil, to seethe
• to roil (e.g. waterfall, torrent), to foam, to cascade down
• to well up (of emotions), to overflow (e.g. fighting spirit), to seethe (esp. blood)

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

• to devise, to plot, to plan

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

• height (of summer, party, etc.), (in) full swing

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

• to have a taste for, to be fond of, to enjoy (in moderation), to have an interest in (e.g. a hobby)
• to be modest, to be prudent, to watch (e.g. one's behaviour)

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

• to bend, to warp
• to lose heart

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

• heavily laden (of a branch), sagging, drooping, bent low

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

• to be associated (with), to be connected (with)

usually written using kana alone  pre-noun adjectival  adjective (generic) 

• slight, minor, trifling, trivial, petty
• considerable, proper, decent, respectable, quite (a)

usually written using kana alone  expression  Ichidan verb  verb (generic) 

• to keep in pace with, to keep up with, to follow (someone's thought), to understand

usually written using kana alone  adverb 

• never, not at all