redcap vs Great Britain

redcap and Great Britain both are nouns.

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

redcap (noun)	Great Britain (noun)
a porter who helps passengers with their baggage at a railroad station	an island comprising England and Scotland and Wales
a member of the military police in Britain	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