coitus interruptus vs exclusion

coitus interruptus

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

exclusion

noun
  • The act of excluding or shutting out; removal from consideration or taking part. 

  • An item not covered by an insurance policy. 

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