nay vs refutation

nay

noun
  • A person who voted against. 

  • A vote against. 

adv
  • Or rather, or should I say; moreover (introducing a stronger and more appropriate expression than the preceding one). 

refutation

noun
  • A vocal answer to an attack on one's assertions. 

  • An act of refuting or disproving; the disproving of an argument, opinion, testimony, doctrine or theory by argument or countervailing proof; evidence of falseness. 

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