anathema vs mentionable

anathema

noun
  • An imprecation; a curse; a malediction. 

  • A ban or curse pronounced with religious solemnity by ecclesiastical authority, often accompanied by excommunication; something denounced as accursed. 

  • Something which is vehemently disliked by somebody. 

  • Any person or thing anathematized, or cursed by ecclesiastical authority to unending punishment. 

mentionable

adj
  • Important or worthy of note. 

  • Suitable to be openly talked about, or mentioned; not taboo. 

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