U.K. vs perambulation

U.K. and perambulation both are nouns.

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

U.K. (noun)	perambulation (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 leisurely walk (usually in some public place)
	a walk around a territory (a parish or manor or forest etc.) in order to officially assert and record its boundaries