Great Britain vs bugger all

Great Britain and bugger all both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
bugger all	Yes	No	No	No

Great Britain (noun)	bugger all (noun)
an island comprising England and Scotland and Wales	little or nothing at all
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