terrorist group vs Corsican Army

terrorist group and Corsican Army both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist group	Yes	No	No	No
Corsican Army	Yes	No	No	No

terrorist group (noun)	Corsican Army (noun)
a political movement that uses terror as a weapon to achieve its goals	a terrorist organization founded in 1999 to oppose the link between nationalists and the Corsican mafia