discomfort vs formication

discomfort

noun
  • Mental or bodily distress. 

  • Something that disturbs one’s comfort; an annoyance. 

verb
  • To cause annoyance or distress to. 

formication

noun
  • An abnormal skin sensation similar to that of insects crawling over or within the skin; a tactile hallucination involving such a sensation. A common side-effect of substance abuse, it can also be experienced with high fever, menopause, skin cancer, diabetic neuropathy, or herpes zoster. 

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