An original or indigenous inhabitant of a place; an aborigine.
Late 16th century: from Greek, literally ‘sprung from the earth’, from autos ‘self’ + khthōn ‘earth, soil’.
“There’s no doubting that Aboriginal Australians are the true autochthons of the land”
Nothingburger (noun) (Chiefly US)
A person or thing of no importance, value, or substance. Now esp.: something which, contrary to expectations, turns out to be insignificant or unremarkable.
1950s: from nothing and burger. Added to the OED October 2018.