years vs eld

years and eld both are nouns.

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

As nouns, years and eld are synonyms defined as:

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

years (noun)	eld (noun)
a late time of life	a late time of life
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