trillionth vs ordinal

trillionth and ordinal both are nouns.

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

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

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