American-Indian language vs Indian language

American-Indian language and Indian language both are nouns.

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

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

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

Other synonyms of American-Indian language include American Indian, American Indian language, Amerind, Amerind language, Amerindian language, Indian.

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