Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
人口 じんこう populationjlpt4, leda1
十五夜 じゅうごや night of the full moon/the night of the 15th day of the 8th lunar monthleda1
よる evening/night/(P)leda1, toki
下水 げすい kanál, kanalizaceleda1
大木 たいぼく big treeleda1, shizen