Vocabulary consisting only from characters you are able to read
百万
hyakuman
(1)1,000,000, one million, million, (2)many mix
兆し
kizashi
signs, omen, symptomsmix
一兆
icchou
1,000,000,000,000, one trillion, one billion (obs. British)mix
兆
chou
(1)sign, omen, indication, portent, (num) (2)10^12, 1,000,000,000,000, trillion (American), (obs) billion (British) mix
億
oku
(num) 100,000,000, hundred millionjlpt4