one vs cardinal

one and cardinal both are nouns.

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

one (noun)	cardinal (noun)
a single person or thing	crested thick-billed North American finch having bright red plumage in the male
the smallest whole number or a numeral representing this number	a variable color averaging a vivid red
	(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

one (adjective)	cardinal (adjective)
used of a single unit or thing; not two or more	being or denoting a numerical quantity but not order
being a single entity made by combining separate components	serving as an essential component
(informal) very; used informally as an intensifier
eminent beyond or above comparison
indefinite in time or position
of the same kind or quality
having the indivisible character of a unit