Great Britain vs Brummagem

Great Britain and Brummagem both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
Brummagem	Yes	Yes	No	No

Great Britain (noun)	Brummagem (noun)
an island comprising England and Scotland and Wales	a city in central England; 2nd largest English city and an important industrial and transportation center
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

Great Britain (adjective)	Brummagem (adjective)
	cheap and showy