amount vs red ink

amount and red ink both are nouns.

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

As nouns, red ink is a hyponym of amount; that is, red ink is a word with a more specific, narrower meaning than amount:

amount (noun)	red ink (noun)
how much there is or how many there are of something that you can quantify	the amount by which the cost of a business exceeds its revenue
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)	red ink (verb)
to measure up to in kind or quality
add up in number or quantity
be tantamount or equivalent to