years vs age

years and age both are nouns.

Word	Noun	Adjective	Verb	Adverb
years	Yes	No	No	No
age	Yes	No	Yes	No

As nouns, years and age are synonyms defined as:

Other synonyms of years include eld, geezerhood, old age.

As nouns, years and age are synonyms defined as:

Other synonyms of years include long time.

years (noun)	age (noun)
a late time of life	how long something has existed
a prolonged period of time	a time of life (usually defined in years) at which some particular qualification or power arises
the time during which someone's life continues	a late time of life
	an era of history having some distinctive feature
	a prolonged period of time