cardinal vs million

cardinal and million both are nouns.

Word	Noun	Adjective	Verb	Adverb
cardinal	Yes	Yes	No	No
million	Yes	Yes	No	No

cardinal (noun)	million (noun)
crested thick-billed North American finch having bright red plumage in the male	the number that is represented as a one followed by 6 zeros
a variable color averaging a vivid red	a very large indefinite number (usually hyperbole)
(Roman Catholic Church) one of a group of more than 100 prominent bishops in the Sacred College who advise the Pope and elect new Popes
the number of elements in a mathematical set; denotes a quantity but not the order

cardinal (adjective)	million (adjective)
being or denoting a numerical quantity but not order	(in Roman numerals, M written with a macron over it) denoting a quantity consisting of 1,000,000 items or units
serving as an essential component