concubine vs whore

concubine

noun
  • A slave-girl or woman, kept for instance in a harem, who is held for sexual service. 

  • A sexual partner, especially a woman, to whom one is not or cannot be married. 

  • A woman who lives with a man, but who is not a wife. 

whore

noun
  • A person who is sexually promiscuous; a slut. 

  • A person who is unscrupulous, especially one who compromises their principles for gain. 

  • A person who will violate behavioral standards to achieve something desired. 

  • A contemptible person. 

  • Synonym of prostitute: a person (especially a woman) who offers sexual services for payment. 

verb
  • To prostitute oneself. 

  • To engage the services of a prostitute. 

  • To promote shamelessly. 

  • To pimp; to pander. 

  • To pursue false gods. 

  • To pursue false goals. 

  • To overuse something. 

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