repay vs riposte

repay

verb
  • To make worthwhile; to yield a result worth the effort. 

  • Synonym of pay back in all senses. 

riposte

verb
  • To respond quickly; particularly if the response is humorous. 

  • To attempt to hit an opponent after parrying an attack. 

noun
  • An answer or reply, rapidly uttered, in response to a question or problem. 

  • A thrust given in return after parrying an attack. 

  • A counter-attack in any combat or any sport 

  • A quick and usually witty response to a taunt. 

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