Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
一日 いちにち whole dayjlpt5, leda1, toki
天文学 てんもんがく astronomymix
いし stonejlpt4, kagaku, leda1, shizen
大差 たいさ great differencemix
初めに はじめに in the beginning, at firstjlpt5