Vocabulary consisting only from characters you are able to read
十億
džuuoku
1,000,000,000, billion (American), (obs) milliard (British)mix
億
oku
(num) 100,000,000, hundred millionjlpt4
急ぎ
isogi
haste, hurry, expedition, speed, dispatchjlpt3
鼠
nezumi
(1)mouse, rat, (2)dark gray, dark grey, slate (color, colour); (3)mouse, rat, (4)dark gray, dark grey, slate (color, colour) doubutsu