Vocabulary consisting only from characters you are able to read
一兆
いっちょう
1,000,000,000,000, one trillion, one billion (obs. British)mix
百万
ひゃくまん
(1)1,000,000, one million, million, (2)many mix
十億
じゅうおく
1,000,000,000, billion (American), (obs) milliard (British)mix