act of terrorism vs terrorisation

act of terrorism and terrorisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
act of terrorism	Yes	No	No	No
terrorisation	Yes	No	No	No

act of terrorism (noun)	terrorisation (noun)
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	the act of inspiring with fear
	an act of terrorism