U.K. vs dickie

U.K. and dickie both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.K.	Yes	No	No	No
dickie	Yes	No	No	No

U.K. (noun)	dickie (noun)
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 man's detachable insert (usually starched) to simulate the front of a shirt
	a small third seat in the back of an old-fashioned two-seater