fomentation vs incentive

fomentation

noun
  • Encouragement; excitation; instigation. 

  • A lotion or poultice applied to a diseased or injured part of the body. 

  • The act of fomenting; the application of warm, soft, medicinal substances, as for the purpose of easing pain by relaxing the skin, or of discussing (dispersing) tumours. 

incentive

noun
  • Something that motivates, rouses, or encourages. 

  • A bonus or reward, often monetary, to work harder. 

adj
  • Inciting; encouraging or moving; rousing to action; stimulating. 

  • Serving to kindle or set on fire. 

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