bristle vs facial hair

bristle

noun
  • A stiff or coarse hair, usually and especially on a nonhuman mammal. 

  • The hairs or other filaments that make up a brush, broom, or similar item, typically made from plant cellulose, animal hairs, or synthetic polymers. 

  • A chaeta: an analogous filament on arthropods, annelids, or other animals. 

verb
  • To rise or stand erect, like bristles. 

  • To fix a bristle to. 

  • To be on one's guard or raise one's defenses; to react with fear, suspicion, or distance. 

  • To abound, to have an abundance of something, especially something jutting out. 

facial hair

noun
  • Hair on the face of an animal. 

  • Hair on the face of a human, such as the eyebrows of a man or woman or the androgenic hair (beard or moustache) of a man. 

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