eld vs drinking age

eld and drinking age both are nouns.

Word	Noun	Adjective	Verb	Adverb
eld	Yes	No	No	No
drinking age	Yes	No	No	No

As nouns, drinking age is a hyponym of eld; that is, drinking age is a word with a more specific, narrower meaning than eld:

eld: a time of life (usually defined in years) at which some particular qualification or power arises
drinking age: the age at which is legal for a person to buy alcoholic beverages

Other hyponyms of eld include age of consent, legal age, majority, minority, nonage, voting age.

eld (noun)	drinking age (noun)
a late time of life	the age at which is legal for a person to buy alcoholic beverages
a time of life (usually defined in years) at which some particular qualification or power arises