Great Britain vs Christmas box

Great Britain and Christmas box both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
Christmas box	Yes	No	No	No

Great Britain (noun)	Christmas box (noun)
an island comprising England and Scotland and Wales	a present given at Christmas for services during the year
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