fire watching vs United Kingdom of Great Britain and Northern Ireland

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

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

fire watching (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
(during World War II in Britain) watching for fires started by bombs that dropped from the sky	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