Bachelor of Medicine vs Great Britain

Bachelor of Medicine and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bachelor of Medicine	Yes	No	No	No
Great Britain	Yes	No	No	No

Bachelor of Medicine (noun)	Great Britain (noun)
(a British degree) a bachelor's degree in medicine	an island comprising England and Scotland and Wales
	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