clam vs USA

clam and USA both are nouns.

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

clam (noun)	USA (noun)
burrowing marine mollusk living on sand or mud; the shell closes with viselike firmness	the army of the United States of America; the agency that organizes and trains soldiers for land warfare
flesh of either hard-shell or soft-shell clams	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 piece of paper money worth one dollar

clam (verb)	USA (verb)
gather clams, by digging in the sand by the ocean