terrorist act vs al Qaida

terrorist act and al Qaida both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist act	Yes	No	No	No
al Qaida	Yes	No	No	No

terrorist act (noun)	al Qaida (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 terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groups; has cells in more than 50 countries