shoulder flash vs United Kingdom of Great Britain and Northern Ireland

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

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

shoulder flash (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
something worn on the shoulder of a military uniform as an emblem of a division etc.	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