terrorist act vs Ansar al Islam

terrorist act and Ansar al Islam both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist act	Yes	No	No	No
Ansar al Islam	Yes	No	No	No

terrorist act (noun)	Ansar al Islam (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 Islamic group of terrorists in the Iraqi part of Kurdistan who oppose an independent secular nation as advocated by the United States; some members fought with the Taliban and al-Qaeda forces in Afghanistan; said to receive financial support from Saddam Hussein