milk float vs United Kingdom of Great Britain and Northern Ireland

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

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

milk float (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a van (typically powered by electricity) with an open side that is used to deliver milk to houses	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