nineteenth vs ordinal

nineteenth and ordinal both are nouns.

Word	Noun	Adjective	Verb	Adverb
nineteenth	Yes	Yes	No	No
ordinal	Yes	Yes	No	No

nineteenth (noun)	ordinal (noun)
position 19 in a countable series of things	the number designating place in an ordered sequence

nineteenth (adjective)	ordinal (adjective)
coming next after the eighteenth in position	being or denoting a numerical order in a series
	of or relating to a taxonomic order