Black September Organization vs terrorist act

Black September Organization and terrorist act both are nouns.

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

Black September Organization (noun)	terrorist act (noun)
a Palestinian international terrorist organization that split from the PLO in 1974; has conducted terrorist attacks in 20 countries	the calculated use of violence (or the threat of violence) against civilians in order to attain goals that are political or religious or ideological in nature; this is done through intimidation or coercion or instilling fear
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