List: word usually written using kana alone

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

• Mediterranean mussel (Mytilus galloprovincialis)

usually written using kana alone  Ichidan verb  verb (generic)  intransitive verb  colloquial 

• to age, to get old, to go stale
• to be too grown-up (for one's age), to be precocious
• to become twisted, to become warped, to become perverse

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

• galingale (any plant of genus Cyperus, esp. species Cyperus microiria)
• nut grass (Cyperus rotundus)

usually written using kana alone  noun  noun (generic) 

• nut grass (Cyperus rotundus)

usually written using kana alone  noun  noun (generic) 

• Carex scabrifolia (species of sedge)

usually written using kana alone  noun  noun (generic) 

• Pacific island flatsedge (Cyperus cyperoides)

usually written using kana alone  adverb 

• (not) particularly, (not) especially, (not) very, (not) much

archaic  usually written using kana alone  noun  noun (generic) 

• scourge, whip, switch

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

• aster (Aster tataricus), Tartarian aster, Michaelmas daisy

slang  usually written using kana alone  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic) 

• heterosexual person, straight person