UK vs judder

UK is a noun but judder is not a noun.

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

UK (noun)	judder (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

UK (verb)	judder (verb)
	shake or vibrate rapidly and intensively