untried vs young

untried is not a noun while young is a noun.

Word	Noun	Adjective	Verb	Adverb
untried	No	Yes	No	No
young	Yes	Yes	No	No

As adjectives, untried and young are synonyms defined as:

Other synonyms of untried include unseasoned, untested.

untried (noun)	young (noun)
	any immature animal
	young people collectively

untried (adjective)	young (adjective)
not tried or tested by experience	(used of living things especially persons) in an early period of life or development or growth
not yet proved or subjected to testing	(of crops) harvested at an early stage of development; before complete maturity
	not tried or tested by experience
	being in its early stage
	suggestive of youth; vigorous and fresh