legislation vs subpoena

legislation

noun
  • The act of legislating; preparation and enactment of laws. 

  • Law which has been enacted by legislature or other governing body 

subpoena

noun
  • A writ requiring someone to appear in court to give testimony. 

  • A writ requiring a defendant to appear in court to answer a plaintiff's claim. 

verb
  • To summon with a subpoena. 

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