A teenager in Italy. The term teenager is often considered synonymous with youth.

Youth is the time of life when one is young, but often means the time between childhood and adulthood (maturity).

Definitions of the specific age range that constitutes youth vary. An individual’s actual maturity may not correspond to their chronological age, as immature individuals can exist at all ages. Youth is also defined as “the appearance, freshness, vigor, spirit, etc., characteristic of one who is young”.