tot vs sum

tot and sum both are nouns.

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

As verbs, tot and sum are synonyms defined as:

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

tot (noun)	sum (noun)
a young child who is just beginning to walk	the whole amount
a small amount (especially of a drink)	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
	the final aggregate
	a set containing all and only the members of two or more given sets
	a quantity of money

tot (verb)	sum (verb)
determine the sum of	determine the sum of
	be a summary of