bespatter vs blacken

bespatter

verb
  • To soil by spattering. 

  • To asperse with calumny or reproach; shend. 

  • To spatter or cover with something; sprinkle with anything liquid, or with any wet or adhesive substance. 

blacken

verb
  • To make dirty. 

  • To defame or sully. 

  • To cook (meat or fish) by coating with pepper, etc., and quickly searing in a hot pan. 

  • To become black. 

  • To cause to be or become black. 

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