cess vs imprecation

cess

noun
  • Usually preceded by good or (more commonly) bad: luck or success. 

  • An assessed tax, duty, or levy. 

  • The area along either side of a railroad track which is kept at a lower level than the sleeper bottom, in order to provide drainage. 

verb
  • To levy a cess. 

imprecation

noun
  • The act of imprecating, or invoking evil upon someone; a prayer that a curse or calamity may befall someone. 

  • A curse. 

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