open up vs secrete

open up

verb
  • 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 open. 

  • To widen. 

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

secrete

verb
  • To exude or yield. 

  • To extract a substance from blood, sap, or similar to produce and emit waste for excretion or for the fulfilling of a physiological function. 

  • To conceal. 

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