adultery vs double date

adultery

noun
  • Sexual intercourse by a married person with someone other than their spouse. 

  • Lewdness or unchastity of thought as well as act, as forbidden by the seventh commandment. 

  • Faithlessness in religion. 

  • The intrusion of a person into a bishopric during the life of the bishop. 

  • Adulteration; corruption. 

double date

noun
  • A (romantic) date that two couples go on together. 

verb
  • To go on a double date. 

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