newness vs age

newness and age both are nouns.

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

As nouns, age is a hypernym of newness; that is, age is a word with a broader meaning than newness:

newness (noun)	age (noun)
the quality of being new; the opposite of oldness	how long something has existed
	a time of life (usually defined in years) at which some particular qualification or power arises
	a late time of life
	an era of history having some distinctive feature
	a prolonged period of time