List: noun (common) (futsuumeishi)

popular  JLPT N3  noun  noun (generic)  abbreviation 

• great war, great battle
• world war

popular  JLPT N3  な adjective  adjective (generic)  noun  noun (generic) 

• simple, plain, uncomplicated, straightforward, simple-minded, naive

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

• security, guarantee, collateral, mortgage
• guarantee (e.g. of safety)

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

• short-term

popular  rarely used kanji form  JLPT N3  noun  noun (generic) 

• knowledge, information

popular  JLPT N2  noun  noun (generic) 

• friend, acquaintance

popular  JLPT N2  noun  noun (generic) 

• zone, area, belt, region

popular  rarely used kanji form  JLPT N1  noun  noun (generic) 

• delay, lag, falling behind

popular  JLPT N2  noun  noun (generic) 

• bamboo (any grass of subfamily Bambusoideae)
• middle (of a three-tier ranking system)

popular  JLPT N4  noun  noun (generic) 

• junior high school, middle school, lower secondary school