Ural-Altaic vs Altaic

Ural-Altaic and Altaic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ural-Altaic	Yes	No	No	No
Altaic	Yes	Yes	No	No

As nouns, Altaic is a hyponym of Ural-Altaic; that is, Altaic is a word with a more specific, narrower meaning than Ural-Altaic:

Ural-Altaic: a (postulated) group of languages including many of the indigenous languages of Russia (but not Russian)
Altaic: a group of related languages spoken in Asia and southeastern Europe

Other hyponyms of Ural-Altaic include Altaic language, Uralic, Uralic language.

Ural-Altaic (noun)	Altaic (noun)
a (postulated) group of languages including many of the indigenous languages of Russia (but not Russian)	a group of related languages spoken in Asia and southeastern Europe
	any member of the peoples speaking a language in the Altaic language group

Ural-Altaic (adjective)	Altaic (adjective)
	of or pertaining to or written in Altaic