perambulation vs Great Britain

perambulation and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
perambulation	Yes	No	No	No
Great Britain	Yes	No	No	No

perambulation (noun)	Great Britain (noun)
a leisurely walk (usually in some public place)	an island comprising England and Scotland and Wales
a walk around a territory (a parish or manor or forest etc.) in order to officially assert and record its boundaries	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