ABB vs Revolutionary Proletarian Army

ABB and Revolutionary Proletarian Army both are nouns.

Word	Noun	Adjective	Verb	Adverb
ABB	Yes	No	No	No
Revolutionary Proletarian Army	Yes	No	No	No

As nouns, ABB and Revolutionary Proletarian Army are synonyms defined as:

ABB and Revolutionary Proletarian Army: an urban hit squad and guerrilla group of the Communist Party in the Philippines; formed in the 1980s

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

ABB (noun)	Revolutionary Proletarian Army (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