mod con vs Great Britain

mod con and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
mod con	Yes	No	No	No
Great Britain	Yes	No	No	No

mod con (noun)	Great Britain (noun)
modern convenience; the appliances and conveniences characteristic of a modern house	an island comprising England and Scotland and Wales
	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