Revolutionary Proletarian Nucleus vs foreign terrorist organization

Revolutionary Proletarian Nucleus and foreign terrorist organization both are nouns.

Word	Noun	Adjective	Verb	Adverb
Revolutionary Proletarian Nucleus	Yes	No	No	No
foreign terrorist organization	Yes	No	No	No

Revolutionary Proletarian Nucleus (noun)	foreign terrorist organization (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