Nouns

(n)young, offspringany immature animal
(n)young, youthyoung people collectively“rock music appeals to the young”, “youth everywhere rises in revolt”

Adjectives

(a)young, immature(used of living things especially persons) in an early period of life or development or growth“young people”
(s)new, young(of crops) harvested at an early stage of development; before complete maturity“new potatoes”, “young corn”
(s)youthful, vernal, youngsuggestive of youth; vigorous and fresh“he is young for his age”
(s)youngbeing in its early stage“a young industry”, “the day is still young”
(s)unseasoned, untested, untried, youngnot tried or tested by experience“unseasoned artillery volunteers”, “still untested in battle”, “an illustrator untried in mural painting”, “a young hand at plowing”