terrorist group vs ETA

terrorist group and ETA both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrorist group	Yes	No	No	No
ETA	Yes	No	No	No

terrorist group (noun)	ETA (noun)
a political movement that uses terror as a weapon to achieve its goals	a terrorist organization organized in 1959 by student activists who were dissatisfied with the moderate nationalism of the traditional Basque party; want to create an independent homeland in Spain's western Pyrenees