chancellor vs United Kingdom of Great Britain and Northern Ireland

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

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

chancellor (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
the person who is head of government (in several countries)	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
the honorary or titular head of a university