celibate vs hikikomori

celibate

verb
  • To practice celibacy 

noun
  • One who is not married, especially one who has taken a religious vow not to get married, usually because of being a member of a religious community. 

adj
  • Not married. 

  • Abstaining from sexual relations and pleasures. 

hikikomori

noun
  • 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. 

  • A reclusive person of this kind. 

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