chaplain vs clergywoman

chaplain

noun
  • A member of a religious body who is (often, although not always, of the clergy) officially assigned to provide pastoral care at an institution, group, private chapel, etc. 

  • A person without religious affiliation who carries out similar duties in a secular context. 

clergywoman

noun
  • An ordained (female) Christian minister; a female member of the clergy. 

  • A woman belonging to a clergyman's family. 

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