Vocabulary consisting only from characters you are able to read
kanji
おく
(num) 100,000,000, hundred million
kanji
ひゃく
(num) 100, hundred
kanji
ひゃくまん
(1)1,000,000, one million, million, (2)many
kanji
いっちょう
1,000,000,000,000, one trillion, one billion (obs. British)
kanji
ちょう
(1)sign, omen, indication, portent, (num) (2)10^12, 1,000,000,000,000, trillion (American), (obs) billion (British)