List: word usually written using kana alone

search-only kanji form  usually written using kana alone  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic) 

• self-interested show of kindness, acting selfishly under the guise of kindness

popular  rarely used kanji form  JLPT N1  usually written using kana alone  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• something thrown in (with a purchase), something extra, free gift, freebie, giveaway, premium, prize
• (giving a) discount, price reduction
• addition, embellishment (e.g. to a story)

rarely used kanji form  search-only kanji form  usually written using kana alone  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• review, rehearsal

search-only kanji form  usually written using kana alone  な adjective  adjective (generic)  noun taking the genitive case particle の 

• perfunctory, apathetic, makeshift, slapdash, routine, usual

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

• monetary offering (or gift) wrapped in paper

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

• snack (to have with a drink), side dish

rarely used kanji form  search-only kanji form  usually written using kana alone  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb  polite language 

• primness, putting on airs, prim person
• clear soup

usually written using kana alone  noun  noun (generic) 

• gibbon (any small, long-armed ape of family Hylobatidae)

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

• ground cherry (Physalis alkekengi var. franchetii), husk tomato, Chinese lantern plant
• children's noisemaking toy

usually written using kana alone  noun  noun (generic)  archaic 

• Eurasian oystercatcher (Haematopus ostralegus)
• black-headed gull (Larus ridibundus)
• Cinnalepeta pulchella (species of spiral-shelled gastropod)