terrorist group vs Red Sun

terrorist group and Red Sun both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist group	Yes	No	No	No
Red Sun	Yes	No	No	No

terrorist group (noun)	Red Sun (noun)
a political movement that uses terror as a weapon to achieve its goals	a small but violent terrorist organization formed in Ecuador in the early 1990s; responsible for bombing several government buildings