Sicilian Mafia vs terrorist act

Sicilian Mafia and terrorist act both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sicilian Mafia	Yes	No	No	No
terrorist act	Yes	No	No	No

Sicilian Mafia (noun)	terrorist act (noun)
a secret terrorist group in Sicily; originally opposed tyranny but evolved into a criminal organization in the middle of the 19th century	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