bugbear vs pariah

bugbear

noun
  • A source of dread; resentment; or irritation. 

  • An ongoing problem; a recurring obstacle or adversity. 

verb
  • To alarm with idle phantoms. 

pariah

noun
  • A similarly despised group of people or species of animal. 

  • Synonym of outcast: A person despised and excluded by their family, community, or society, especially a member of the untouchable castes in Indian society. 

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