fish slice vs United Kingdom of Great Britain and Northern Ireland

fish slice and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
fish slice	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

fish slice (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a food turner with a broad blade used for turning or serving fish or other food that is cooked in a frying pan	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