Vocabulary consisting only from characters you are able to read
十日
tooka
ten days, the tenth day of the monthjlpt5, toki
八日
jouka
eight days, the eighth (day of the month)jlpt5, toki
一兆
iččou
1,000,000,000,000, one trillion, one billion (obs. British)mix
十億
džuuoku
1,000,000,000, billion (American), (obs) milliard (British)mix
主な
omona
chief, main, principal, importantmix
主に
omoni
mainly, primarilymix