horripilation vs piloerection

horripilation

noun
  • A real or fancied bristling of the hair of the head or body, resulting from disease, terror, chilliness, etc. 

piloerection

noun
  • The erection of hairs or papillae 

  • goose bumps; goose pimples 

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