native vs autochthonic

native is a noun but autochthonic is not a noun.

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

native (noun)	autochthonic (noun)
indigenous plants and animals
an indigenous person who was born in a particular place
a person born in a particular place or country

native (adjective)	autochthonic (adjective)
characteristic of or existing by virtue of geographic origin	originating where it is found
characteristic of or relating to people inhabiting a region from the beginning
belonging to one by birth
as found in nature in the elemental form