Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
人口 じんこう populationjlpt4, leda1
シュレーディンガーの猫 シュレーディンガーのねこ Schrödinger's catbaka
思いつく おもいつく to think of, to hit upon, to come into one's mind, to be struck with an ideagodan, jlpt3, verb
思う おもう to thinkgodan, jlpt4, leda1, verb, vtrans
愛人 あいじん loverai