become vs amount

become is not a noun while amount is a noun.

Word	Noun	Adjective	Verb	Adverb
become	No	No	Yes	No
amount	Yes	No	Yes	No

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

Other hyponyms of become include boil down, come down, reduce, choke, suffocate, nucleate, add up, come.

become (noun)	amount (noun)
	how much there is or how many there are of something that you can quantify
	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

become (verb)	amount (verb)
enter or assume a certain state or condition	to measure up to in kind or quality
come into existence	add up in number or quantity
undergo a change or development	be tantamount or equivalent to
enhance the appearance of