Black September Movement vs act of terrorism

Black September Movement and act of terrorism both are nouns.

Word	Noun	Adjective	Verb	Adverb
Black September Movement	Yes	No	No	No
act of terrorism	Yes	No	No	No

Black September Movement (noun)	act of terrorism (noun)
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	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