What does “young” mean here? Isn’t it adjective?
Good question! "Young" is used as adjective in general, but it is used as a noun in this context. "Young" is used to call a group of young animals or offspring. Ex: Male penguin and female penguin take turns to look after their young. "Young" can also mean a group of youth (young people). Ex: This is a volunteer service that specifically targets uneducated young.
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