roly-poly vs Great Britain

roly-poly and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
roly-poly	Yes	Yes	No	No
Great Britain	Yes	No	No	No

roly-poly (noun)	Great Britain (noun)
pudding made of suet pastry spread with jam or fruit and rolled up and baked or steamed	an island comprising England and Scotland and Wales
a rotund individual	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

roly-poly (adjective)	Great Britain (adjective)
short and plump