Revolutionary Proletarian Nucleus vs terrorist group

Revolutionary Proletarian Nucleus and terrorist group both are nouns.

Word	Noun	Adjective	Verb	Adverb
Revolutionary Proletarian Nucleus	Yes	No	No	No
terrorist group	Yes	No	No	No

Revolutionary Proletarian Nucleus (noun)	terrorist group (noun)
a clandestine group of leftist extremists who oppose Italy's labor policies and foreign policy; responsible for bombing building in the historic center of Rome from 2000 to 2002	a political movement that uses terror as a weapon to achieve its goals