blackcoat vs celebrant

blackcoat

noun
  • A member of the clergy. 

celebrant

noun
  • A person who officiates at a religious ceremony, especially a marriage or the Eucharist. 

  • A person who is celebrating something. 

  • A person who conducts formal ceremonies in the community, particularly weddings, baby namings, renewals of wedding vows and funerals. 

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