Reconstruction Period vs age

Reconstruction Period and age both are nouns.

Word	Noun	Adjective	Verb	Adverb
Reconstruction Period	Yes	No	No	No
age	Yes	No	Yes	No

Reconstruction Period (noun)	age (noun)
the period after the American Civil War when the southern states were reorganized and reintegrated into the Union; 1865-1877	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