terrorism vs terrorist

terrorism and terrorist both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorism	Yes	No	No	No
terrorist	Yes	No	No	No

terrorism (noun)	terrorist (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	a radical who employs terror as a political weapon; usually organizes with other terrorists in small cells; often uses religion as a cover for terrorist activities