Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
かわ riverjlpt5, shizen
一人 ひとり one personjlpt5
人口 じんこう populationjlpt4, leda1
火力 かりょく heating power, steam powermix
二人 ふたり two persons, two people, pair, couplejlpt5