Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
来月 raigetsu next monthjlpt5, leda1, toki
行う okonau to dogodan, jlpt3, jlpt4, leda1, verb
売買 baibai trade, buying and sellingsuru
何度も nandomo many times over, oftenmix
有界 yuukai boundedmath