grit vs guts

grit

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

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

  • 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. 

verb
  • To cover with grit. 

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

guts

noun
  • Courage; determination. 

  • The center of the field. 

  • Content, substance. 

  • One's innermost feelings. 

  • The entrails or contents of the abdomen. 

  • The essential, core parts. 

  • The ring in the gambling game two-up in which the spinner operates; the centre. 

verb
  • To show determination or courage (especially in the combination guts out). 

  • To eat greedily. 

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