Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
母音 boin (ling) vowelbunpou
国道 kokudou státní silniceleda1
学生 gakusei studentgakkou, jlpt5, leda1, shigoto
七分 nanafun 7 minutestoki
火口 kakou kráterleda1, shizen