Britain vs constable

Britain and constable both are nouns.

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

Britain (noun)	constable (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	a lawman with less authority and jurisdiction than a sheriff
	a police officer of the lowest rank