coitus interruptus vs deliverance

coitus interruptus

noun
  • Sexual intercourse interrupted by withdrawal of the penis before ejaculation. 

deliverance

noun
  • Delivery in childbirth. 

  • The act of setting free or extricating from danger, imprisonment, bondage, evil, etc. 

  • The act of delivering or conveying something. 

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