List: noun (common) (futsuumeishi)

popular  JLPT N5  noun  noun (generic)  aviation 

• elevator, lift
• elevator

popular  JLPT N3  noun  noun (generic) 

• engine

popular  JLPT N2  noun  noun (generic) 

• orchestra

gairaigo  waseigo  English origin  popular  JLPT N4  noun  noun (generic) 

• motorcycle, motorbike

popular  JLPT N2  noun  noun (generic) 

• automation

popular  JLPT N1  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb  transitive verb  な adjective  adjective (generic)  noun or verb acting prenominally 

• opening (a new store, golf course, runway, etc.)
• open, frank, approachable, open-hearted
• open (car, collar, tournament, etc.)

gairaigo  English origin  popular  noun  noun (generic) 

• Olympics, Olympic Games

gairaigo  Portuguese origin  popular  JLPT N2  noun  noun (generic) 

• organ (musical instrument)

popular  JLPT N1  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic) 

• orange (fruit, colour)

popular  JLPT N4  noun  noun (generic) 

• curtain, curtains