Youth or adolescence — the vibrant period of life (often called the springtime of life) associated with energy, growth, and passion.
学生時代の友人との思い出は青春そのものだ。
Memories with friends from my student days are the very essence of youth.
青春を謳歌する映画を見て泣いてしまった。
I cried after watching a movie that celebrates youth.
若さと経験不足は青春の一部でもある。
Youth includes both vigor and a lack of experience.