hikikomori vs santon

hikikomori

noun
  • A reclusive person of this kind. 

  • A Japanese phenomenon whereby an individual becomes a recluse from society, typically remaining isolated in a single room at home for a very long period. 

santon

noun
  • A Muslim holy man. 

  • In France (originally Provence), a small, hand-painted, terracotta figurine of a nativity character. 

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