unify vs aggregate

unify is not a noun while aggregate is a noun.

Word	Noun	Adjective	Verb	Adverb
unify	No	No	Yes	No
aggregate	Yes	Yes	Yes	No

As verbs, aggregate is a hyponym of unify; that is, aggregate is a word with a more specific, narrower meaning than unify:

Other hyponyms of unify include combine, concoct, combine, compound, blend, immingle, intermingle, intermix.

unify (noun)	aggregate (noun)
	the whole amount
	a sum total of many heterogenous things taken together
	material such as sand or gravel used with cement and water to make concrete, mortar, or plaster

unify (adjective)	aggregate (adjective)
	composed of a dense cluster of separate units such as carpels or florets or drupelets
	formed of separate units gathered into a mass or whole

unify (verb)	aggregate (verb)
become one	gather in a mass, sum, or whole
join or combine	amount in the aggregate to
to bring or combine together or with something else
act in concert or unite in a common purpose or belief
bring together for a common purpose or action or ideology or in a shared situation