terrorist group vs IMU

terrorist group and IMU both are nouns.

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

terrorist group (noun)	IMU (noun)
a political movement that uses terror as a weapon to achieve its goals	a terrorist group of Islamic militants formed in 1996; opposes Uzbekistan's secular regime and wants to establish an Islamic state in central Asia; is a conduit for drugs from Afghanistan to central Asian countries