rota vs United Kingdom of Great Britain and Northern Ireland

rota and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
rota	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

rota (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a roster of names showing the order in which people should perform certain duties	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