List: colloquial

popular  search-only kana form  JLPT N4  noun  noun (generic)  abbreviation  colloquial  noun (suffix) 

• police
• police officer
• police station
• self-appointed enforcer (of a rule, standard, etc.), busybody, vigilante, gatekeeper

popular  JLPT N5  noun  noun (generic)  colloquial  noun (suffix)  counter 

• hand, arm
• forepaw, foreleg
• handle
• hand, worker, help
• trouble, care, effort
• means, way, trick, move, technique, workmanship
• hand, handwriting
• kind, type, sort
• one's hands, one's possession
• ability to cope
• hand (of cards)
• direction
• move (in go, shogi, etc.)

popular  JLPT N5  noun  noun (generic)  colloquial 

• foot, paw, arm (of an octopus, squid, etc.)
• leg
• gait
• pace
• lower radical of a kanji
• means of transportation, (one's) ride
• money, coin

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

• overall victory, championship, winning the title
• (being in) heaven, bliss, perfect contentment

popular  noun  noun (generic)  colloquial 

• general election (of the lower house)
• fan popularity voting (esp. for idols), popularity contest

popular  JLPT N3  noun  noun (generic)  colloquial 

• oil, petroleum
• kerosene, paraffin

popular  search-only kana form  search-only kanji form  JLPT N5  noun  noun (generic)  colloquial  noun taking the genitive case particle の  adjective (generic) 

• illness (usu. excluding minor ailments, e.g. common cold), disease, sickness
• bad habit, bad behaviour, weakness, failing
• crazy, insane, disturbed, sick in the head

popular  JLPT N3  pronoun  colloquial  usually written using kana alone  noun  noun (generic)  adverb  interjection 

• what
• you-know-what, that thing
• whatsit, whachamacallit, what's-his-name, what's-her-name
• penis, (one's) thing, dick
• (not) at all, (not) in the slightest
• what?, huh?
• hey!, come on!
• oh, no (it's fine), why (it's nothing), oh (certainly not)

popular  JLPT N4  noun  noun (generic)  colloquial  idiomatic expression 

• air, atmosphere
• mood, situation
• someone with no presence, someone who doesn't stand out at all

popular  search-only kana form  JLPT N4  noun  noun (generic)  colloquial 

• son
• penis