Vocabulary consisting only from characters you are able to read
緑の日
midorinohi
(n) Greenery Day (national holiday; May 4)namae, toki
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
億
oku
(num) 100,000,000, hundred millionjlpt4