allochthonous vs indigenous

allochthonous

adj
  • Originating in a place other than where it is found. 

  • Buried or found in a place remote from the site of formation. 

indigenous

adj
  • Innate, inborn. 

  • Born or originating in, native to a land or region, especially before an intrusion. 

  • In particular, of or relating to a people (or their language or culture) that inhabited a region prior to the arrival of people of other cultures which became dominant (e.g., through colonialism), and which maintains a distinct culture. 

How often have the words allochthonous and indigenous occurred in a corpus of books? (source: Google Ngram Viewer )