Black September Organization vs terrorist group

Black September Organization and terrorist group both are nouns.

Word	Noun	Adjective	Verb	Adverb
Black September Organization	Yes	No	No	No
terrorist group	Yes	No	No	No

Black September Organization (noun)	terrorist group (noun)
a Palestinian international terrorist organization that split from the PLO in 1974; has conducted terrorist attacks in 20 countries	a political movement that uses terror as a weapon to achieve its goals
a former Palestinian terrorist organization (now merged with Fatah Revolutionary Council) that assassinated the Prime Minister of Jordan and during the 1972 Olympic Games in Munich killed 11 Israeli athletes