List: noun (common) (futsuumeishi)

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

• declaration, proclamation, announcement

popular  JLPT N4  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb 

• war
• fighting, fierce competition

popular  JLPT N1  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb  noun taking the genitive case particle の  adjective (generic) 

• election

popular  JLPT N3  noun  noun (generic) 

• player (of a sport), athlete, team member

popular  noun  noun (generic)  adverb 

• the preceding year, the previous year, last year

popular  JLPT N3  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic)  adverb 

• whole, entirety
• to begin with, in the first place
• ... the heck (e.g. "what the heck?"), ... in the world (e.g. "why in the world?"), ... on earth (e.g. "who on earth?")

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

• measure, step, action

popular  obsolete reading  search-only kanji form  JLPT N3  noun  noun (generic)  noun or participle taking the aux. verb する  biology  geology 

• organization, organisation, formation
• structure, construction, setup, constitution
• system (e.g. railroad, transport, party, etc.)
• tissue
• texture (of a rock)
• weave (of a fabric)

popular  JLPT N1  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb  noun taking the genitive case particle の  adjective (generic) 

• search (esp. in criminal investigations), investigation, inquiry, enquiry

popular  JLPT N3  noun  noun (generic) 

• companion, partner, company
• other party, addressee, counterparty
• opponent (sports, etc.)