Nouns

(n)young person, youth, younker, spring chickena young person (especially a young man or boy)
(n)young, youthyoung people collectively“rock music appeals to the young”, “youth everywhere rises in revolt”
(n)youththe time of life between childhood and maturity
(n)youthearly maturity; the state of being young or immature or inexperienced
(n)youth, early daysan early period of development“during the youth of the project”
(n)youth, youthfulness, juvenilitythe freshness and vitality characteristic of a young person