young vs untried

young is a noun but untried is not a noun.

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

As adjectives, young and untried are synonyms defined as:

Other synonyms of young include unseasoned, untested.

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

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