deliquescence vs sapping

deliquescence

noun
  • The action or process of deliquescing. 

  • The condition of being deliquescent. 

sapping

noun
  • The act by which something is sapped or depleted. 

  • The act of excavating trenches. 

  • The act of being struck with a sap or club. 

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