United Kingdom of Great Britain and Northern Ireland vs plaint

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

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

United Kingdom of Great Britain and Northern Ireland (noun)	plaint (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 cry of sorrow and grief
	(United Kingdom) a written statement of the grounds of complaint made to court of law asking for the grievance to be redressed