radical cell vs terrorist act

radical cell and terrorist act both are nouns.

Word	Noun	Adjective	Verb	Adverb
radical cell	Yes	No	No	No
terrorist act	Yes	No	No	No

radical cell (noun)	terrorist act (noun)
a cell of terrorists (usually 3 to 5 members)	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