terrorist vs terrorism

terrorist and terrorism both are nouns.

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

terrorist (noun)	terrorism (noun)
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	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