Republic of Kazakhstan vs Commonwealth of Independent States

Republic of Kazakhstan and Commonwealth of Independent States both are nouns.

Word	Noun	Adjective	Verb	Adverb
Republic of Kazakhstan	Yes	No	No	No
Commonwealth of Independent States	Yes	No	No	No

Republic of Kazakhstan (noun)	Commonwealth of Independent States (noun)
a landlocked republic to the south of Russia and to the northeast of the Caspian Sea; the original Turkic-speaking inhabitants were overrun by Mongols in the 13th century; an Asian soviet from 1936 to 1991	an alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991