noun, noun which may take the genitive case particle 'no'
boys and girls
Refers to young people, typically children or adolescents, collectively. Often used in contexts like events, stories, or groups.
このイベントは少年少女を対象にしています。
This event is aimed at boys and girls.
少年少女合唱団が美しい歌を披露した。
The boys and girls choir performed a beautiful song.
男女 refers to men and women of any age, whereas 少年少女 is limited to young boys and girls.
Compound of 少年 (boy) and 少女 (girl), both Sino-Japanese words. The combination straightforwardly means 'boys and girls'.