Vocabulary consisting only from characters you are able to read
変数
hensuu
variable (e.g. math), parametermix
留年
ryuunen
repeating the same class (school), staying more than two years in the same classgakkou, suru
駅伝
ekiden
(1)stagecoach, post horse, (2)(abbr) long-distance relay race mix
不参加
fusanka
abstention, nonparticipationmix