Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
天文学 てんもんがく astronomymix
分の ぶんの denominator bun no numerator (in writing common fractions), X Yth's (Y bun no X)jlpt3, math
エー足す1エコールビー エーたす1エコールビー A+1=Bmath
山川 さんせん; やまかわ; やまがわ mountains and rivers; mountains and rivers; mountain riversmix
空前 くうぜん unprecedented, record-breakingmix