RPA-ABB vs ABB

RPA-ABB and ABB both are nouns.

Word	Noun	Adjective	Verb	Adverb
RPA-ABB	Yes	No	No	No
ABB	Yes	No	No	No

As nouns, RPA-ABB and ABB are synonyms defined as:

RPA-ABB and ABB: an urban hit squad and guerrilla group of the Communist Party in the Philippines; formed in the 1980s

Other synonyms of RPA-ABB include Alex Boncayao Brigade, Revolutionary Proletarian Army.

RPA-ABB (noun)	ABB (noun)
an urban hit squad and guerrilla group of the Communist Party in the Philippines; formed in the 1980s	an urban hit squad and guerrilla group of the Communist Party in the Philippines; formed in the 1980s