necromantic vs shamanistic

necromantic

adj
  • Of or relating to necromancy: the resurrection of or communication with the dead, especially through the use of black magic. 

noun
  • conjuration 

shamanistic

adj
  • Of, pertaining to, or characteristic of shamanism. 

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