Orange Volunteers vs Northern Ireland

Orange Volunteers and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
Orange Volunteers	Yes	No	No	No
Northern Ireland	Yes	No	No	No

Orange Volunteers (noun)	Northern Ireland (noun)
a terrorist group of Protestants who oppose any political settlement with Irish nationalists; a paramilitary group that attacks Catholic interests in Northern Ireland	a division of the United Kingdom located on the northern part of the island of Ireland