Indian vs Amerindian language

Indian and Amerindian language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Indian	Yes	Yes	No	No
Amerindian language	Yes	No	No	No

As nouns, Indian and Amerindian language are synonyms defined as:

Indian and Amerindian language: any of the languages spoken by Amerindians

Indian (noun)	Amerindian language (noun)
any of the languages spoken by Amerindians	any of the languages spoken by Amerindians
a native or inhabitant of India

Indian (adjective)	Amerindian language (adjective)
of or relating to or characteristic of India or the East Indies or their peoples or languages or cultures
of or pertaining to Native Americans or their culture or languages