List: noun (common) (futsuumeishi)

popular  JLPT N1  noun  noun (generic) 

• (social) class
• rank, grade

popular  JLPT N5  noun  noun (generic) 

• stairs, stairway, staircase

popular  JLPT N2  noun  noun (generic) 

• surgery (branch of medicine)
• department of surgery

popular  JLPT N1  noun  noun (generic) 

• general idea, concept, notion

popular  JLPT N3  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• readiness, (mental) preparedness
• resolution, determination
• resignation (to one's fate)

popular  JLPT N2  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic) 

• musical instrument

popular  JLPT N5  noun  noun (generic) 

• kanji, Chinese character

popular  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb  noun taking the genitive case particle の  adjective (generic) 

• judgement, judgment, expert opinion, appraisal

popular  JLPT N3  noun  noun (generic) 

• mistake, error, blunder
• accident, mishap, trouble
• improper conduct (e.g. between man and woman), indiscretion

popular  JLPT N2  noun  noun (generic) 

• raw materials, ingredient