Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
世界 sekai worldjlpt4, shizen
開く hiraku to open an eventgodan, jlpt3, jlpt4, verb, vtrans
軽度 keido longitudeshizen
使用 shiyou use/application/employment/utilization/utilisation/(P)leda1, suru
koto věc, záležitostleda1