Great Britain vs al-Muhajiroun

Great Britain and al-Muhajiroun both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
al-Muhajiroun	Yes	No	No	No

Great Britain (noun)	al-Muhajiroun (noun)
an island comprising England and Scotland and Wales	a hard-line extremist Islamic group in Great Britain who support bin Laden and other terrorist groups
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