tavern keeper vs Britain

tavern keeper and Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
tavern keeper	Yes	No	No	No
Britain	Yes	No	No	No

tavern keeper (noun)	Britain (noun)
the keeper of a public house	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