List: word usually written using kana alone

usually written using kana alone  noun  noun (generic) 

• rose of Sharon (Hibiscus syriacus), Korean rose

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

• bargain, find
• unbelievable good luck, unexpected good fortune

ateji  colloquial  usually written using kana alone  adverb  な adjective  adjective (generic)  noun  noun (generic) 

• very, extremely, so
• absurd, ridiculous, nonsensical
• excessive, extreme

usually written using kana alone  noun  noun (generic) 

• Japanese umbrella pine (Sciadopitys verticillata), parasol pine, koyamaki

usually written using kana alone  noun  noun (generic) 

• leaf mustard (Brassica juncea var. integrifolia), mustard greens

usually written using kana alone  noun  noun (generic) 

• round-leaved sundew (Drosera rotundifolia), common sundew

noun  noun (generic)  usually written using kana alone 

• riverside willow (esp. rosegold pussy willow, Salix gracilistyla)
• Salix gilgiana (species of willow)
• high-quality coarse tea

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

• common merganser (Mergus merganser), goosander

usually written using kana alone  い adjective  adjective (generic) 

• humorous, funny, amusing, laughable, hilarious, comical, jocular
• enjoyable (e.g. life), pleasant, fun

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

• heartfelt, sincere, wholehearted