Magna Carta vs United Kingdom of Great Britain and Northern Ireland

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

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

Magna Carta (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
the royal charter of political rights given to rebellious English barons by King John in 1215	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