phthisic vs sapping

phthisic

noun
  • Any wasting or shrinking of another body part such as, for example, the eye (phthisis bulbi). 

  • A wasting illness of the lungs, such as asthma or tuberculosis; consumption; phthisis. 

  • Any wasting disease. 

  • A person suffering from phthisis. 

adj
  • Of or relating to phthisis or tuberculosis; tubercular; consumptive. 

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 phthisic and sapping occurred in a corpus of books? (source: Google Ngram Viewer )