List: noun (common) (futsuumeishi)

popular  noun  noun (generic) 

• lawyer, attorney

popular  JLPT N1  noun  noun (generic) 

• insurance
• guarantee, warranty

popular  JLPT N1  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• maintenance
• conservatism, conservativeness, conservation

popular  JLPT N3  noun  noun (generic) 

• mother

popular  rarely used kanji form  JLPT N1  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb  physics 

• collapse, crumbling, breaking down, caving in
• (radioactive) decay, disintegration

popular  noun  noun (generic) 

• corporation, corporate body, company, legal entity, legal person, juridical person

popular  JLPT N4  noun  noun (generic) 

• law, legislation, act

popular  JLPT N2  noun  noun (generic)  noun (suffix)  noun or participle taking the aux. verb する  transitive verb 

• prevention, check

popular  JLPT N3  noun  noun (generic) 

• the person in question, the person themselves, said person

popular  search-only kana form  search-only kanji form  JLPT N5  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic)  な adjective 

• truth, reality, actuality, fact
• proper, right, correct, official
• genuine, authentic, real, natural, veritable