autochthonic vs indigenous

autochthonic and indigenous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
autochthonic	No	Yes	No	No
indigenous	No	Yes	No	No

As adjectives, autochthonic and indigenous are synonyms defined as:

Other synonyms of autochthonic include autochthonal, autochthonous, endemic.

autochthonic (adjective)	indigenous (adjective)
originating where it is found	originating where it is found