American Indian language vs Amerind

American Indian language and Amerind both are nouns.

Word	Noun	Adjective	Verb	Adverb
American Indian language	Yes	No	No	No
Amerind	Yes	Yes	No	No

As nouns, American Indian language and Amerind are synonyms defined as:

American Indian language and Amerind: any of the languages spoken by Amerindians

American Indian language (noun)	Amerind (noun)
any of the languages spoken by Amerindians	any of the languages spoken by Amerindians

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