push-bike vs United Kingdom of Great Britain and Northern Ireland

push-bike and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
push-bike	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

push-bike (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a bicycle that must be pedaled	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