curse vs impiety

curse

noun
  • A prayer or imprecation that harm may befall someone. 

  • The cause of great harm, evil, or misfortune; that which brings evil or severe affliction; torment. 

  • A supernatural detriment or hindrance; a bane. 

  • A vulgar epithet. 

verb
  • To place a curse upon (a person or object). 

  • To bring great evil upon; to be the cause of serious harm or unhappiness to; to furnish with that which will be a cause of deep trouble; to afflict or injure grievously; to harass or torment. 

  • To use offensive or morally inappropriate language. 

  • To speak or shout a vulgar curse or epithet. 

  • To call upon divine or supernatural power to send injury upon; to imprecate evil upon; to execrate. 

impiety

noun
  • The lack of respect for a god or something sacred. 

  • An impious act. 

  • The state of being impious. 

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