seventeenth vs ordinal

seventeenth and ordinal both are nouns.

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

seventeenth (noun)	ordinal (noun)
position 17 in a countable series of things	the number designating place in an ordered sequence

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