pannikin vs Great Britain

pannikin and Great Britain both are nouns.

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

pannikin (noun)	Great Britain (noun)
a small pan or cup (usually of tin)	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