apathy vs grit

apathy

noun
  • Lack of emotion or motivation; lack of interest or enthusiasm towards something; disinterest (in something). 

grit

verb
  • To cover with grit. 

  • Apparently only in grit one's teeth: to clench, particularly in reaction to pain or anger. 

noun
  • A hard, coarse-grained siliceous sandstone; gritstone. Also, a finer sharp-grained sandstone, e.g., grindstone grit. 

  • Strength of mind; great courage or fearlessness; fortitude. 

  • A collection of hard small materials, such as dirt, ground stone, debris from sandblasting or other such grinding, or swarf from metalworking. 

  • Coarsely ground corn or hominy used as porridge. 

  • Inedible particles in food. 

  • Husked but unground oats. 

  • A measure of the relative coarseness of an abrasive material such as sandpaper, the smaller the number the coarser the abrasive. 

  • Sand or a sand–salt mixture spread on wet and, especially, icy roads and footpaths to improve traction. 

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