UK vs roly-poly

UK and roly-poly both are nouns.

Word	Noun	Adjective	Verb	Adverb
UK	Yes	No	No	No
roly-poly	Yes	Yes	No	No

UK (noun)	roly-poly (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	pudding made of suet pastry spread with jam or fruit and rolled up and baked or steamed
	a rotund individual

UK (adjective)	roly-poly (adjective)
	short and plump