aboriginal vs indigen

aboriginal and indigen both are nouns.

Word	Noun	Adjective	Verb	Adverb
aboriginal	Yes	Yes	No	No
indigen	Yes	No	No	No

As nouns, aboriginal and indigen are synonyms defined as:

aboriginal and indigen: an indigenous person who was born in a particular place

Other synonyms of aboriginal include aborigine, indigene, native.

aboriginal (noun)	indigen (noun)
an indigenous person who was born in a particular place	an indigenous person who was born in a particular place

aboriginal (adjective)	indigen (adjective)
characteristic of or relating to people inhabiting a region from the beginning
having existed from the beginning; in an earliest or original stage or state