United Kingdom of Great Britain and Northern Ireland vs workhouse

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

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

United Kingdom of Great Britain and Northern Ireland (noun)	workhouse (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 county jail that holds prisoners for periods up to 18 months
	a poorhouse where able-bodied poor are compelled to labor