List: noun (generic)

popular  noun  noun (generic) 

• stream, brook, creek

popular  JLPT N3  noun  noun (generic)  abbreviation 

• fire fighting
• fire department, fire brigade, firefighter

popular  JLPT N1  noun  noun (generic) 

• sky, the skies, high-altitude sky, upper air

popular  JLPT N1  noun  noun (generic) 

• (one's) superior, (one's) boss, the higher-ups

popular  noun  noun (generic) 

• regulations, rules
• (local) regulation, ordinance, bylaw, law

popular  JLPT N1  noun  noun (generic) 

• colour, color, hue, tints

popular  JLPT N3  noun  noun (generic) 

• height (of a person), stature

popular  JLPT N1  noun  noun (generic) 

• route, course, path
• one's future course (e.g. after graduating high school)

popular  JLPT N4  noun  noun (generic) 

• water supply, water service, waterworks, tap water
• channel, strait
• water course, waterway

popular  noun  noun (generic) 

• water's surface