exude vs secrete

exude

verb
  • To discharge through pores or incisions, as moisture or other liquid matter; to give out. 

  • To flow out through the pores. 

  • To give off or radiate a certain quality or emotion, often strongly. 

secrete

verb
  • 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. 

  • To exude or yield. 

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