don vs Great Britain

don and Great Britain both are nouns.

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

don (noun)	Great Britain (noun)
teacher at a university or college (especially at Cambridge or Oxford)	an island comprising England and Scotland and Wales
the head of an organized crime family	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

don (verb)	Great Britain (verb)
put clothing on one's body