terrorist group vs Japanese Red Army

terrorist group and Japanese Red Army both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist group	Yes	No	No	No
Japanese Red Army	Yes	No	No	No

terrorist group (noun)	Japanese Red Army (noun)
a political movement that uses terror as a weapon to achieve its goals	a terrorist group organized in 1970 to overthrow the Japanese government and monarchy and to foment world revolution; is said to have close ties with Palestinian terrorists