Islamic State of Afghanistan vs the Pamirs

Islamic State of Afghanistan and the Pamirs both are nouns.

Word	Noun	Adjective	Verb	Adverb
Islamic State of Afghanistan	Yes	No	No	No
the Pamirs	Yes	No	No	No

Islamic State of Afghanistan (noun)	the Pamirs (noun)
a mountainous landlocked country in central Asia; bordered by Iran to the west and Russia to the north and Pakistan to the east and south	a mountain range in central Asia that is centered in Tajikistan but extends into Kyrgyzstan and Afghanistan and Pakistan and western China