extirpate vs found

extirpate

verb
  • To destroy completely; to annihilate, to cause to go extinct locally. 

  • To surgically remove. 

  • To pull up by the roots; uproot. 

found

verb
  • To form by melting a metal and pouring it into a mould; to cast. 

  • To melt, especially of metal in an industrial setting. 

  • To begin building. 

  • To start (an institution or organization). 

noun
  • A thin, single-cut file for comb-makers. 

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