Turkmenistan vs Turkmenia

Turkmenistan and Turkmenia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Turkmenistan	Yes	No	No	No
Turkmenia	Yes	No	No	No

As nouns, Turkmenistan and Turkmenia are synonyms defined as:

Turkmenistan and Turkmenia: a republic in Asia to the east of the Caspian Sea and to the south of Kazakhstan and to the north of Iran; an Asian soviet from 1925 to 1991

Other synonyms of Turkmenistan include Turkmen, Turkomen.

Turkmenistan (noun)	Turkmenia (noun)
a republic in Asia to the east of the Caspian Sea and to the south of Kazakhstan and to the north of Iran; an Asian soviet from 1925 to 1991	a republic in Asia to the east of the Caspian Sea and to the south of Kazakhstan and to the north of Iran; an Asian soviet from 1925 to 1991