Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
子牛 こうし calfdoubutsu
せん 1,000, thousandjlpt5
分の ぶんの denominator bun no numerator (in writing common fractions), X Yth's (Y bun no X)jlpt3, math
立方 りっぽう cubesuru