churchwarden vs pipage

churchwarden

noun
  • A churchwarden pipe. 

  • A lay officer of the Church of England who handles the secular affairs of the parish. 

  • A similar functionary of the Episcopal church. 

pipage

noun
  • Plumbing, a system of pipes. 

  • A charge made for piping a fluid from one place to another. 

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