Great Britain vs dickie

Great Britain and dickie both are nouns.

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

Great Britain (noun)	dickie (noun)
an island comprising England and Scotland and Wales	a man's detachable insert (usually starched) to simulate the front of a shirt
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	a small third seat in the back of an old-fashioned two-seater