Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
問題 mondai problem, questionjlpt5, leda1
書く kaku to writegodan, jlpt5, leda1, verb, vtrans
時代 džidai age, period, generationjlpt4, leda1, toki
子馬 kouma foaldoubutsu, leda1
研ぐ togu (1)to sharpen, to hone, to whet, to grind, (2)to wash (rice), (3)to scour, to polish, to burnish godan, verb, vtrans