U.S.A. vs clam

U.S.A. and clam both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S.A.	Yes	No	No	No
clam	Yes	No	Yes	No

U.S.A. (noun)	clam (noun)
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	burrowing marine mollusk living on sand or mud; the shell closes with viselike firmness
	flesh of either hard-shell or soft-shell clams
	a piece of paper money worth one dollar

U.S.A. (verb)	clam (verb)
	gather clams, by digging in the sand by the ocean