Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
新橋 shinbashi Shinbashi (section of Tokyo)namae
研究 kenkyuu study, researchjlpt3, jlpt4
残業 zangyou overtimejlpt3, shigoto
開曲線 kaikyokusen open curvemath
暗い kurai dark, gloomyadj, jlpt5