Tadzhikistan vs Tajikistan

Tadzhikistan and Tajikistan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tadzhikistan	Yes	No	No	No
Tajikistan	Yes	No	No	No

As nouns, Tadzhikistan and Tajikistan are synonyms defined as:

Tadzhikistan and Tajikistan: a landlocked mountainous republic in southeast central Asia to the north of Afghanistan; formerly an Asian soviet

Other synonyms of Tadzhikistan include Republic of Tajikistan, Tadjik, Tadzhik, Tajik.

Tadzhikistan (noun)	Tajikistan (noun)
a landlocked mountainous republic in southeast central Asia to the north of Afghanistan; formerly an Asian soviet	a landlocked mountainous republic in southeast central Asia to the north of Afghanistan; formerly an Asian soviet