Rio Bravo vs USA

Rio Bravo and USA both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rio Bravo	Yes	No	No	No
USA	Yes	No	No	No

Rio Bravo (noun)	USA (noun)
a North American river; boundary between the United States and Mexico; flows into Gulf of Mexico	the army of the United States of America; the agency that organizes and trains soldiers for land warfare
	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