サイ、セイ

とし、とせ、よわい

ノ, 小, 戈, 止

year-end, age, occasion, opportunity

"万歳(ばんざい): (1) crying ""banzai"" (or raising one's hands in the banzai gesture) (2) something worthy of celebration (3) giving up (4) long time (5) eternal life (and prosperity) (6) banzai (a celebratory cheer); hurrah (hooray, hurray)
二十歳(はたち): (1) 20 years old (2) twenty"