Britain vs ranker

Britain and ranker both are nouns.

Word	Noun	Adjective	Verb	Adverb
Britain	Yes	No	No	No
ranker	Yes	No	No	No

Britain (noun)	ranker (noun)
a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom	an enlisted soldier who serves in the ranks of the armed forces
	a commissioned officer who has been promoted from enlisted status