ETA vs terrorist organization

ETA and terrorist organization both are nouns.

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

ETA (noun)	terrorist organization (noun)
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	a political movement that uses terror as a weapon to achieve its goals