List: noun (generic)

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

• upper stream, upper course, upper reaches
• upstream
• upper classes

popular  JLPT N3  noun  noun (generic) 

• food, foodstuff

popular  JLPT N1  noun  noun (generic)  colloquial 

• believer, adherent, devotee, follower
• fanboy, fanatic, superfan

popular  search-only kanji form  JLPT N2  な adjective  adjective (generic)  noun  noun (generic) 

• pitch-dark, pitch-black, completely dark
• very bleak (future), utterly hopeless

popular  search-only kanji form  noun  noun (generic) 

• relatives, one's family
• friends, members of the same organization
• followers, henchmen
• one's whole body

popular  JLPT N2  noun  noun (generic) 

• hydrogen (H)

popular  JLPT N2  noun  noun (generic) 

• water, liquid, fluid, moisture, humidity, sap, juice

popular  rarely used kanji form  JLPT N2  noun  noun (generic) 

• Japanese cedar (Cryptomeria japonica)

popular  noun  noun (generic) 

• ecology, life and habits (of an animal)
• mode of life, way of living

popular  JLPT N2  noun  noun (generic) 

• customs, customs house