Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
地雷 jirai land minesensou
国字 kokuji (1)country's official writing system, native script, (2)kana, (3)kanji that originated in Japan (as opposed to China) bunpou
旅行 ryokou travel, tripjlpt5, leda1, ryokou
要る iru to needgodan, jlpt5, verb, vintrans
数値誤差 suuchigosa numerical errormath