Kirgizstan vs Kyrgyz Republic

Kirgizstan and Kyrgyz Republic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kirgizstan	Yes	No	No	No
Kyrgyz Republic	Yes	No	No	No

As nouns, Kirgizstan and Kyrgyz Republic are synonyms defined as:

Kirgizstan and Kyrgyz Republic: a landlocked republic in west central Asia bordering on northwestern China; formerly an Asian soviet but became independent in 1991

Other synonyms of Kirgizstan include Kirghiz, Kirghizia, Kirghizstan, Kirgiz, Kirgizia, Kyrgyzstan.

Kirgizstan (noun)	Kyrgyz Republic (noun)
a landlocked republic in west central Asia bordering on northwestern China; formerly an Asian soviet but became independent in 1991	a landlocked republic in west central Asia bordering on northwestern China; formerly an Asian soviet but became independent in 1991