Mongolian vs Altaic

Mongolian and Altaic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mongolian	Yes	Yes	No	No
Altaic	Yes	Yes	No	No

As nouns, Altaic is a hypernym of Mongolian; that is, Altaic is a word with a broader meaning than Mongolian:

Other hypernyms of Mongolian include Altaic language.

Mongolian (noun)	Altaic (noun)
a family of Altaic language spoken in Mongolia	a group of related languages spoken in Asia and southeastern Europe
a member of the nomadic peoples of Mongolia	any member of the peoples speaking a language in the Altaic language group

Mongolian (adjective)	Altaic (adjective)
of or relating to the region of Mongolia or its people or their languages or cultures	of or pertaining to or written in Altaic
of or relating to the modern Mongolian People's Republic