salad cream vs United Kingdom of Great Britain and Northern Ireland

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

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

salad cream (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a creamy salad dressing resembling mayonnaise	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