1000 vs cardinal

1000 and cardinal both are nouns.

Word	Noun	Adjective	Verb	Adverb
1000	Yes	Yes	No	No
cardinal	Yes	Yes	No	No

1000 (noun)	cardinal (noun)
the cardinal number that is the product of 10 and 100	crested thick-billed North American finch having bright red plumage in the male
	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

1000 (adjective)	cardinal (adjective)
denoting a quantity consisting of 1,000 items or units	being or denoting a numerical quantity but not order
	serving as an essential component