indigenous vs autochthonic

indigenous and autochthonic both are adjectives.

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

As adjectives, indigenous and autochthonic are synonyms defined as:

Other synonyms of indigenous include autochthonal, autochthonous, endemic.

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