List: rarely used kana form

rarely used kana form  search-only kanji form  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• mounding earth, earthwork, banking, filling (with soil), raising land
• mounded earth, embankment, mound

rarely used kana form  noun  noun (generic) 

• paternal relative, relative on one's father's side

rarely used kana form  noun  noun (generic) 

• pterodactylus, pterodactyl