unseasoned vs young

unseasoned is not a noun while young is a noun.

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

As adjectives, unseasoned and young are synonyms defined as:

Other synonyms of unseasoned include untested, untried.

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

unseasoned (adjective)	young (adjective)
not aged or processed	(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
without salt or seasoning	not tried or tested by experience
	being in its early stage
	suggestive of youth; vigorous and fresh