moistness vs moisture

moistness

noun
  • The property of being moist. 

moisture

noun
  • The state of being moist. 

  • That which moistens or makes damp or wet; exuding fluid; liquid in small quantity. 

  • Skin moisture noted as dry, moist, clammy, or diaphoretic as part of the skin signs assessment. 

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