found vs open up

found

verb
  • To begin building. 

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

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

  • To start (an institution or organization). 

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

open up

verb
  • To open. 

  • Synonym of cheat out (“to face or turn toward the audience more than would be natural”) 

  • To begin running, driving, travelling, etc., at maximum speed. 

  • To commence firing weapons. 

  • To rain. 

  • To widen. 

  • To reveal oneself; to share personal information about oneself; to become communicative. 

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