popular  JLPT N1  noun  noun (generic)  abbreviation 

• bed, bedding
• sickbed
• alcove
• riverbed
• seedbed
• straw "core" of a tatami mat
• floor

popular  JLPT N3  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic)  numeric  abbreviation  mathematics  philosophy 

• (logical) true, regular
• 10^40, ten thousand undecillion
• original
• positive, greater than zero
• thesis (in dialectics)

popular  JLPT N3  noun  noun (generic)  abbreviation 

• living thing, organism, creature, life
• biology

popular  JLPT N3  noun  noun (generic)  abbreviation 

• great war, great battle
• world war

popular  obsolete kanji  JLPT N3  noun  noun (generic)  noun taking the genitive case particle の  adjective (generic)  abbreviation  noun (suffix)  noun (prefix)  colloquial 

• iron (Fe)
• steel
• iron (will, discipline, lady, etc.)
• railway
• railway enthusiast

popular  abbreviation  noun  noun (generic) 

• entrance examination

popular  abbreviation  noun  noun (generic) 

• agricultural cooperative

popular  JLPT N4  noun  noun (generic)  abbreviation 

• play, playing, game
• pleasure, amusement, pastime, recreation, diversion
• play (in a mechanism, e.g. a steering wheel)
• flexibility (in a performance, art, etc.), freedom
• flyleaf

popular  JLPT N3  noun  noun (generic)  abbreviation 

• mail service, postal service, mail, post
• mail, postal matter, postal items

popular  JLPT N1  noun  noun (generic)  abbreviation 

• communism
• Communist Party