tuck box vs United Kingdom of Great Britain and Northern Ireland

tuck box and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
tuck box	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

tuck box (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a box for storing eatables (especially at boarding school)	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