Vocabulary consisting only from characters you are able to read
八日
youka
eight days, the eighth (day of the month)jlpt5, toki
億
oku
(num) 100,000,000, hundred millionjlpt4
玉ねぎ
tamanegi
onion (edible plant, Allium cepa)mix
緑の日
midorinohi
(n) Greenery Day (national holiday; May 4)namae, toki
百京
hyakukyou
kvadrilionmix
百
hyaku
(num) 100, hundredjlpt5
七日
nanoka
seven days, the seventh day of the monthjlpt5, toki
十日
tooka
ten days, the tenth day of the monthjlpt5, toki
紅白
kouhaku
red and white, colours for festive or auspicious occasions (colors)iro
九日
kokonoka
nine days, the ninth day (of the month)jlpt5, toki