sum vs total

sum and total both are nouns.

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

As nouns, sum and total are synonyms defined as:

Other synonyms of sum include aggregate, totality.

As nouns, sum and total are synonyms defined as:

sum and total: a quantity obtained by the addition of a group of numbers

Other synonyms of sum include amount.

As verbs, sum and total are synonyms defined as:

Other synonyms of sum include add, add together, add up, sum up, summate, tally, tot, tot up, tote up.

sum (noun)	total (noun)
the whole amount	the whole amount
the choicest or most essential or most vital part of some idea or experience	a quantity obtained by the addition of a group of numbers
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

sum (adjective)	total (adjective)
	constituting the full quantity or extent; complete
	complete in extent or degree and in every particular

sum (verb)	total (verb)
determine the sum of	damage beyond the point of repair
be a summary of	determine the sum of
	add up in number or quantity