Vocabulary consisting only from characters you are able to read
七日
なのか
seven days, the seventh day of the monthjlpt5, toki
九日
ここのか
nine days, the ninth day (of the month)jlpt5, toki
億
おく
(num) 100,000,000, hundred millionjlpt4
と金
ときん
Promoted pawn ("tokin")Shogi