Amerind vs natural language

Amerind and natural language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Amerind	Yes	Yes	No	No
natural language	Yes	No	No	No

As nouns, natural language is a hypernym of Amerind; that is, natural language is a word with a broader meaning than Amerind:

Amerind: any of the languages spoken by Amerindians
natural language: a human written or spoken language used by a community; opposed to e.g. a computer language

Other hypernyms of Amerind include tongue.

Amerind (noun)	natural language (noun)
any of the languages spoken by Amerindians	a human written or spoken language used by a community; opposed to e.g. a computer language

Amerind (adjective)	natural language (adjective)
of or pertaining to Native Americans or their culture or languages