What is young?
young is (adj) not old This is where your Daddy lived when he was young. She’s very young, she’s only six. He be- came Prime Minister when he was still a young man. My little brother’s much youn- ger than me or than I am. In the afternoon there are TV programmes for very young children. (NOTE: younger – youngest) (noun) 1. young animals or birds Animals fight to protect their young. 2. the young young people Today, the young have great need of spiritual guidance.
source: Easier English, Student Dictionary Upper Intermediate Level