IAA vs act of terrorism

IAA and act of terrorism both are nouns.

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

IAA (noun)	act of terrorism (noun)
Yemen-based terrorist group that supports al-Qaeda's goals; seeks to overthrow the Yemeni government and eliminate United States interests; responsible for bombings and kidnappings and killing western tourists in Yemen	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 plant hormone promoting elongation of stems and roots