quadrillionth vs ordinal

quadrillionth and ordinal both are nouns.

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

quadrillionth (noun)	ordinal (noun)
one part in a quadrillion equal parts	the number designating place in an ordered sequence

quadrillionth (adjective)	ordinal (adjective)
the ordinal number of one quadrillion in counting order	being or denoting a numerical order in a series
	of or relating to a taxonomic order