ranker vs Britain

ranker and Britain both are nouns.

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

ranker (noun)	Britain (noun)
an enlisted soldier who serves in the ranks of the armed forces	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 commissioned officer who has been promoted from enlisted status