Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
お子さん okosan child (polite)jlpt4
成り立つ naritacu (1)to consist of, (2)to be practical (logical, feasible, viable), to be concluded, to hold true godan, verb, vintrans, vtrans
道草 mičikusa tráva u cestyleda1
代える kaeru (1)to replace, (2)to exchange, to interchange, (3)to substitute ichidan, jlpt3, leda1, verb, vtrans
線分 senbun line segmentmath