aggregate vs sum

aggregate and sum both are nouns.

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

As nouns, aggregate and sum are synonyms defined as:

Other synonyms of aggregate include total, totality.

As nouns, sum is a hypernym of aggregate; that is, sum is a word with a broader meaning than aggregate:

Other hypernyms of aggregate include sum total, summation.

aggregate (noun)	sum (noun)
the whole amount	the whole amount
a sum total of many heterogenous things taken together	the choicest or most essential or most vital part of some idea or experience
material such as sand or gravel used with cement and water to make concrete, mortar, or plaster	a quantity obtained by the addition of a group of numbers
	the final aggregate
	a set containing all and only the members of two or more given sets
	a quantity of money

aggregate (adjective)	sum (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

aggregate (verb)	sum (verb)
gather in a mass, sum, or whole	determine the sum of
amount in the aggregate to	be a summary of