What part of speech is “young”

young is an adjective used to describe the age or qualities associated with a young person or animal. It is often used to describe someone who is not yet adult-like in terms of behavior, maturity, and their stage in life.

1. She and her friends are young so they still make silly mistakes.

2. He wants to make sure he's making the right financial decisions as a young adult.

3. The young pup was still learning to avoid obstacles.