BOB vs poon

BOB

noun
  • Vibrator (device designed to stimulate a woman's genitals). 

adj
  • Back-of-the-book; denoting those stamps in a catalogue that are not used for the payment of regular postage fees, and are displayed separately in the catalogue after that listing; the division between these two groups varies with the publisher. 

poon

noun
  • Poontang, the vagina, or, intercourse with a woman. 

  • A wimp; a pussy. 

  • Any of several East Indian trees of the genus Calophyllum, yielding a light, hard wood used for masts, spars, etc. 

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