List: Youtube

Wordpopular  obsolete kanji  usually written using kana alone  noun  noun (generic) 

• firefly (Luciola cruciata), lightning bug, glowworm

Wordwork of art, literature, music, etc. name  noun  noun (generic)  ENAMDICT/JMnedict words 

• Grave of Fireflies (film)

Wordpopular  search-only kana form  chemistry  noun  noun (generic)  abbreviation  usually written using kana alone 

• carbonic acid
• carbonated water, carbonated drink
• baking soda, sodium carbonate

Wordpopular  JLPT N2  noun  noun (generic) 

• locomotive, engine

Wordpopular  JLPT N2  noun  noun (generic)  noun or participle taking the aux. verb する 

• lending, loaning

Wordpopular  noun  noun (generic) 

• annual income

Wordgrammar  noun  noun (generic) 

• contraction, shortened form, abbreviated form

Wordpopular  search-only kanji form  JLPT N3  noun  noun (generic) 

• surplus, margin, leeway, room, space, time, allowance, flexibility, scope
• composure, placidity, complacency, calm

Wordpopular  な adjective  adjective (generic) 

• significant, useful, meaningful, worthwhile, valuable, of interest

Wordnoun  noun (generic) 

• spaceship