salivate vs slobber

salivate

verb
  • To produce saliva. 

  • To show eager anticipation at the expectation of something. 

slobber

verb
  • To allow saliva or liquid to run from one's mouth. 

  • To kiss. 

noun
  • Liquid material, generally saliva, that dribbles or drools outward and downward from the mouth. 

  • Muddy or marshy land; mire. 

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