red ink vs amount

red ink and amount both are nouns.

Word	Noun	Adjective	Verb	Adverb
red ink	Yes	No	No	No
amount	Yes	No	Yes	No

As nouns, amount is a hypernym of red ink; that is, amount is a word with a broader meaning than red ink:

Other hypernyms of red ink include amount of money, sum, sum of money.

red ink (noun)	amount (noun)
the amount by which the cost of a business exceeds its revenue	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

red ink (verb)	amount (verb)
	to measure up to in kind or quality
	add up in number or quantity
	be tantamount or equivalent to