Tadzhik vs CIS

Tadzhik and CIS both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tadzhik	Yes	No	No	No
CIS	Yes	No	No	No

Tadzhik (noun)	CIS (noun)
the Iranian language of the Tajik that is closely related to Farsi; spoken in Iran and Tajikistan	an alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991
an ethnic group (mostly Muslim) living in Tajikistan and neighboring areas of Uzbekistan and Afghanistan and China
a landlocked mountainous republic in southeast central Asia to the north of Afghanistan; formerly an Asian soviet
a native or inhabitant of Tajikistan and neighboring areas of Uzbekistan and Afghanistan and China