UK vs don

UK and don both are nouns.

Word	Noun	Adjective	Verb	Adverb
UK	Yes	No	No	No
don	Yes	No	Yes	No

UK (noun)	don (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	teacher at a university or college (especially at Cambridge or Oxford)
	the head of an organized crime family

UK (verb)	don (verb)
	put clothing on one's body