foreign terrorist organization vs MRTA

foreign terrorist organization and MRTA both are nouns.

Word	Noun	Adjective	Verb	Adverb
foreign terrorist organization	Yes	No	No	No
MRTA	Yes	No	No	No

foreign terrorist organization (noun)	MRTA (noun)
a political movement that uses terror as a weapon to achieve its goals	a Marxist-Leninist terrorist organization in Peru; was formed in 1983 to overthrow the Peruvian government and replace it with a Marxist regime; has connections with the ELN in Bolivia