List: word usually written using kana alone

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

• blackmail, extortion, racketeering
• blackmailer, extortionist

usually written using kana alone  noun  noun (generic) 

• Oriental ostrich fern (Pentarhizidium orientale)

usually written using kana alone  noun  noun (generic) 

• Japanese painted fern (Athyrium niponicum), pictum

usually written using kana alone  noun  noun (generic) 

• tiny bristle fern (Crepidomanes minutum)

usually written using kana alone  noun  noun (generic) 

• Adiantum edgeworthii (species of maidenhair fern)

usually written using kana alone  noun  noun (generic) 

• thick-stemmed wood fern (Dryopteris crassirhizoma)

usually written using kana alone  noun  noun (generic) 

• Blechnum amabile (species of hard fern)

usually written using kana alone  noun  noun (generic) 

• Dryopteris lacera (species of wood fern)

usually written using kana alone  noun  noun (generic) 

• Japanese beech fern (Thelypteris decursive-pinnata)

usually written using kana alone  noun  noun (generic) 

• crested Oriental chain fern (Woodwardia orientalis)