Kyrgyzstan vs Kyrgyz Republic

Kyrgyzstan and Kyrgyz Republic both are nouns.

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

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

Kyrgyzstan 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 Kyrgyzstan include Kirghiz, Kirghizia, Kirghizstan, Kirgiz, Kirgizia, Kirgizstan.

Kyrgyzstan (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