Russian Federation vs Commonwealth of Independent States

Russian Federation and Commonwealth of Independent States both are nouns.

Word	Noun	Adjective	Verb	Adverb
Russian Federation	Yes	No	No	No
Commonwealth of Independent States	Yes	No	No	No

Russian Federation (noun)	Commonwealth of Independent States (noun)
a federation in northeastern Europe and northern Asia; formerly Soviet Russia; since 1991 an independent state	an alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991