List: word usually written using kana alone

ateji  usually written using kana alone  noun  noun (generic) 

• sole (any fish of the families Cynoglossidae and Soleidae)
• red tonguesole (Cynoglossus joyneri)

usually written using kana alone  dated term  conjunction 

• if so, in that case, then

usually written using kana alone  noun  noun (generic) 

• spear squid (Loligo bleekeri)

usually written using kana alone  noun  noun (generic) 

• Japanese bindweed (Calystegia japonica)

usually written using kana alone  noun  noun (generic) 

• fiddler crab (esp. species Uca arcuata)

irregular kanji usage  usually written using kana alone  noun  noun (generic) 

• aconite (esp. species Aconitum japonicum), wolfsbane, monkshood
• traditional bugaku hat

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

• soused mackerel, vinegared mackerel

usually written using kana alone  noun  noun (generic) 

• sugar beet (Beta vulgaris)

irregular kanji usage  usually written using kana alone  noun  noun (generic) 

• rabbitear iris (Iris laevigata)

usually written using kana alone  noun  noun (generic) 

• thoroughwort (species of boneset, Eupatorium fortunei)