American Indian language vs American-Indian language

American Indian language and American-Indian language both are nouns.

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

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

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

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

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