boyhood; adolescence (male)
Refers to the period of being a boy, roughly from late childhood through adolescence. Often used in developmental or psychological contexts.
Boyhood is an important period for personality development.
He spent his boyhood in the countryside.
Refers to adolescence or young adulthood, a later stage than 少年期.
Compound of 少年 (boy, juvenile) and 期 (period, stage).