billionth vs the States

billionth and the States both are nouns.

Word	Noun	Adjective	Verb	Adverb
billionth	Yes	Yes	No	No
the States	Yes	No	No	No

billionth (noun)	the States (noun)
one part in a billion equal parts	North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
position 1,000,000,000 in a countable series of things

billionth (adjective)	the States (adjective)
the ordinal number of one billion in counting order