cuckoldry vs faithfulness

cuckoldry

noun
  • The state of being a cuckold. 

  • Among certain male fish, the practice of interrupting a mating pair to release sperm in an attempt to fertilize the female. 

  • An act of adultery committed by a married woman against her husband. 

faithfulness

noun
  • The state of being faithful 

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