Aboriginal Australian language vs Australian language

Aboriginal Australian language and Australian language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aboriginal Australian language	Yes	No	No	No
Australian language	Yes	No	No	No

As nouns, Aboriginal Australian language and Australian language are synonyms defined as:

Aboriginal Australian language and Australian language: the Austronesian languages spoken by Australian aborigines

Other synonyms of Aboriginal Australian language include Aboriginal Australian, Australian.

Aboriginal Australian language (noun)	Australian language (noun)
the Austronesian languages spoken by Australian aborigines	the Austronesian languages spoken by Australian aborigines