Vocabulary consisting only from characters you are able to read
鼠
ねずみ
(1)mouse, rat, (2)dark gray, dark grey, slate (color, colour); (3)mouse, rat, (4)dark gray, dark grey, slate (color, colour) doubutsu
紅白
こうはく
red and white, colours for festive or auspicious occasions (colors)iro
緑の日
みどりのひ
(n) Greenery Day (national holiday; May 4)namae, toki
億
おく
(num) 100,000,000, hundred millionjlpt4