age vs minority

age and minority both are nouns.

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

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

age: a time of life (usually defined in years) at which some particular qualification or power arises
minority: any age prior to the legal age

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

age (noun)	minority (noun)
how long something has existed	being or relating to the smaller in number of two parts
a time of life (usually defined in years) at which some particular qualification or power arises	a group of people who differ racially or politically from a larger group of which it is a part
a late time of life	any age prior to the legal age
an era of history having some distinctive feature
a prolonged period of time