terrorist organization vs Orange Volunteers

terrorist organization and Orange Volunteers both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist organization	Yes	No	No	No
Orange Volunteers	Yes	No	No	No

terrorist organization (noun)	Orange Volunteers (noun)
a political movement that uses terror as a weapon to achieve its goals	a terrorist group of Protestants who oppose any political settlement with Irish nationalists; a paramilitary group that attacks Catholic interests in Northern Ireland