List: noun (common) (futsuumeishi)

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

• deceleration

popular  JLPT N2  noun  noun (generic) 

• limit, bounds

popular  JLPT N2  noun  noun (generic) 

• classic (work, esp. book), the classics

popular  JLPT N1  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb  intransitive verb  biology  Internet slang  abbreviation 

• fixing (in place), being fixed (in place), securing, anchoring, fastening down
• fixing (e.g. salary, capital), keeping the same
• fixation (histology)
• user name (on an online forum like 2ch where the majority of users post anonymously)
• user of an online handle (instead of posting anonymously)

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

• isolation, being alone, being friendless

popular  JLPT N5  noun  noun (generic)  archaic 

• door (esp. Japanese-style)
• shutter, window shutter
• entrance (to a home)
• narrows

popular  JLPT N3  noun  noun (generic) 

• pride, boast, credit (to)

popular  adverb  noun  noun (generic) 

• half, 50%, tie, evenness
• 5 parts, 5%

popular  irregular okurigana  JLPT N3  noun  noun (generic) 

• error, mistake, slip, bug

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

• misunderstanding