ordinal vs quintillionth

ordinal and quintillionth both are nouns.

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

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

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