amount vs sum of money

amount and sum of money both are nouns.

Word	Noun	Adjective	Verb	Adverb
amount	Yes	No	Yes	No
sum of money	Yes	No	No	No

As nouns, amount and sum of money are synonyms defined as:

Other synonyms of amount include amount of money, sum.

amount (noun)	sum of money (noun)
how much there is or how many there are of something that you can quantify	a quantity of money
the relative magnitude of something with reference to a criterion
a quantity obtained by the addition of a group of numbers
a quantity of money

amount (verb)	sum of money (verb)
to measure up to in kind or quality
add up in number or quantity
be tantamount or equivalent to