Kirghizstan vs Kyrgyzstan

Kirghizstan and Kyrgyzstan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kirghizstan	Yes	No	No	No
Kyrgyzstan	Yes	No	No	No

As nouns, Kirghizstan and Kyrgyzstan are synonyms defined as:

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

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

Kirghizstan (noun)	Kyrgyzstan (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