Britain vs Cymru

Britain and Cymru both are nouns.

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

Britain (noun)	Cymru (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	one of the four countries that make up the United Kingdom of Great Britain and Northern Ireland; during Roman times the region was known as Cambria