popular  rarely used kanji form  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• defense, defence, safeguard, protection

popular  rarely used kanji form  JLPT N2  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb  noun taking the genitive case particle の  adjective (generic) 

• contradiction, inconsistency

popular  rarely used kanji form  JLPT N1  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb  interjection 

• comprehension, consent, understanding, agreement
• OK, roger

popular  rarely used kanji form  JLPT N5  な adjective  adjective (generic)  usually written using kana alone  interjection 

• disliking, not wanting, unwilling (to do), reluctant
• unpleasant, disagreeable, nasty, horrible, disgusting, undesirable, unwelcome
• no!, quit it!, stop!

popular  rarely used kanji form  JLPT N1  な adjective  adjective (generic)  noun taking the genitive case particle の  noun  noun (generic) 

• essential, important, crucial, vital, main

popular  rarely used kanji form  search-only kanji form  JLPT N4  noun  noun (generic) 

• condition, state
• health, state (of health)
• way, manner
• circumstance, luck
• face, dignity, decency, propriety

popular  rarely used kanji form  JLPT N1  suffix 

• along (a river, coast, railway, etc.), on (e.g. a street)

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

• origin, beginning, start

popular  rarely used kanji form  JLPT N1  noun  noun (generic)  noun or participle taking the aux. verb する  transitive verb 

• entrusting (something to a person), consignment (of goods), putting in someone's charge, trust, commission

popular  rarely used kanji form  noun  noun (generic)  noun or participle taking the aux. verb する  intransitive verb  transitive verb 

• return (home), repatriation
• feedback (in an electronic circuit, biological system, etc.)