dampen vs evaporate

dampen

verb
  • To make damp or moist; to make moderately wet. 

  • To lessen; to dull; to make less intense (said of emotions and non-physical things). 

  • To become damped or deadened. 

  • To become damp or moist. 

evaporate

verb
  • to expel moisture from (usually by means of artificial heat), leaving the solid portion 

  • to give vent to; to dissipate 

  • to transition from a liquid state into a gaseous state 

  • to disappear; to escape or pass off without effect 

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