terrorist act vs Ulster Defence Association

terrorist act and Ulster Defence Association both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist act	Yes	No	No	No
Ulster Defence Association	Yes	No	No	No

terrorist act (noun)	Ulster Defence Association (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 major Protestant paramilitary group in Northern Ireland; responsible for bombing the homes of Catholics and for criminal racketeering and selling drugs