United Kingdom of Great Britain and Northern Ireland vs doorknob

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

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

United Kingdom of Great Britain and Northern Ireland (noun)	doorknob (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	a knob used to release the catch when opening a door (often called `doorhandle' in Great Britain)