trillion vs USA

trillion and USA both are nouns.

Word	Noun	Adjective	Verb	Adverb
trillion	Yes	Yes	No	No
USA	Yes	No	No	No

trillion (noun)	USA (noun)
the number that is represented as a one followed by 12 zeros	the army of the United States of America; the agency that organizes and trains soldiers for land warfare
the number that is represented as a one followed by 18 zeros in the UK	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
a very large indefinite number (usually hyperbole)

trillion (adjective)	USA (adjective)
one million million in the United States
one quintillion in Great Britain