Afghanistani vs Asian

Afghanistani and Asian both are nouns.

Word	Noun	Adjective	Verb	Adverb
Afghanistani	Yes	Yes	No	No
Asian	Yes	Yes	No	No

As nouns, Asian is a hypernym of Afghanistani; that is, Asian is a word with a broader meaning than Afghanistani:

Other hypernyms of Afghanistani include Asiatic.

Afghanistani (noun)	Asian (noun)
a native or inhabitant of Afghanistan	a native or inhabitant of Asia

Afghanistani (adjective)	Asian (adjective)
of or relating to or characteristic of Afghanistan or its people	of or relating to or characteristic of Asia or the peoples of Asia or their languages or culture