Aboriginal Australian vs Aboriginal Australian language

Aboriginal Australian and Aboriginal Australian language both are nouns.

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

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

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

Other synonyms of Aboriginal Australian include Australian, Australian language.

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