answer to vs countermove

answer to

verb
  • To be accountable or responsible to; to account to; to report to. 

  • To justify oneself to (someone). (usually with have to) 

  • To respond to (a name); to treat as one's own name. 

countermove

verb
  • To move in opposition or in retaliation. 

noun
  • A move in opposition or response to a preceding move. 

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