List: rarely used kana form

rarely used kana form  noun  noun (generic)  abbreviation 

• trembling, quaking, shaking
• earthquake

rarely used kana form  archaic  noun  noun (generic) 

• delayed interment (so that mourners can pay their respects)

rarely used kana form  rarely used kanji form  noun  noun (generic) 

• something so heavy it must be pulled by a thousand men, pulling with strength of a thousand people

rarely used kana form  noun  noun (generic) 

• steampunk

rarely used kana form  search-only kana form  noun  noun (generic) 

• Helvetica (sans-serif typeface)

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

• rhinoceros auklet (Cerorhinca monocerata), hornbilled puffin

rarely used kana form  biology  noun  noun (generic) 

• microbiome

rarely used kana form  poetical term  noun  noun (generic) 

• bottom of the water, bottom of the sea, river bottom

rarely used kana form  rarely used kanji form  noun  noun (generic) 

• generating cycle (of the five elements in Chinese philosophy; wood generates fire, fire generates earth, earth generates metal, metal generates water, water generates wood), mutual generation

rarely used kana form  noun  noun (generic)  noun or participle taking the aux. verb する 

• heavy armor, heavy armour, wearing heavy armor