dickey vs United Kingdom of Great Britain and Northern Ireland

dickey and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
dickey	Yes	Yes	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

dickey (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
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

dickey (adjective)	United Kingdom of Great Britain and Northern Ireland (adjective)
(British informal) faulty