Great Britain vs meat safe

Great Britain and meat safe both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
meat safe	Yes	No	No	No

Great Britain (noun)	meat safe (noun)
an island comprising England and Scotland and Wales	a safe for storing meat
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