As nouns the difference between nerve and grit
is that
nerve is a bundle of neurons with their connective tissue sheaths, blood vessels and lymphatics while
grit is collection of hard small materials, such as dirt, ground stone, debris from sandblasting or other such grinding, swarf from metalworking.
As verbs the difference between nerve and grit
is that
nerve is to give courage;
sometimes with "up".grit is to clench, particularly in reaction to pain or anger; apparently only appears in
gritting one's teeth.
As an adjective Grit is
of or belonging to the Liberal Party of Canada.