несовершеннолетние; дети и подростки(also called Infant, person below the legal age of majority or adulthood. The age of majority varies in different countries, and even in different jurisdictions within a country. It also differs with the type of activity concerned, such as marrying, purchasing alcohol, or driving an automobile. Twenty-one years is a common division between minors and adults. Britannica Alexander Demidov)
второстепенный; меньший из двух; младший; умеренный; менее распространённый(Min$draV); несовершеннолетний(* child someone who is not yet an adult. You don’t usually use child to talk about babies or teenagers: Many children are scared of the dark. | He’s just a child. * kid informal a child. Kid is the usual word to use in everyday spoken English: We left the kids in the car. * little boy/little girl a young male or female child: I lived there when I was a little girl. | Little boys love dinosaurs. * teenager someone between the ages of 13 and 19: There’s not much for teenagers to do around here. * adolescent a young person who is developing into an adult – used especially when talking about the problems these people have: He changed from a cheerful child to a confused adolescent. * youth especially disapproving a teenage boy – especially one who is violent and commits crimes: He was attacked by a gang of youths. | a youth court * youngster a child or young person – used especially by old people: You youngsters have got your whole life ahead of you. | He’s a bright youngster with a good sense of humour. * minor law someone who is not yet legally an adult: It is illegal to sell alcohol to a minor. LDOCE Alexander Demidov); второклассный; незначительный; малозначимый(Andrey Truhachev); малоизвестный(художник и т.д., не обязательно второстепенный Ася Кудрявцева); меньший; малолетний; меньшой; копеечный(of expenses)
минорный(напр., минорный компонент смеси; т.е. компонент смеси, содержание которого значительно ниже содержания основных компонентов; т.о., смысл термина раскрывается в противопоставлении основной – минорный в рамках количественных взаимотношений Min$draV)