What is the meaning of younger?

adjective

• Used of living things especially persons. ( in an early period of life or development or growth)
  • usage: "young people"
  • synonyms: young, immature
• Of crops. ( harvested at an early stage of development; before complete maturity)
  • usage: "new potatoes"; "young corn"
  • synonyms: new, young
• Suggestive of youth; vigorous and fresh.
  • usage: "he is young for his age"
  • synonyms: youthful, vernal, young
• Being in its early stage.
  • usage: "a young industry"; "the day is still young"
  • synonyms: young
• Not tried or tested by experience.
  • usage: "unseasoned artillery volunteers"; "still untested in battle"; "an illustrator untried in mural painting"; "a young hand at plowing"
  • synonyms: unseasoned, untested, untried, young
• Used of the younger of two persons of the same name especially used to distinguish a son from his father.
  • usage: "John Junior"; "John Smith, Jr."
  • synonyms: jr.