BOB vs discriminate

BOB

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. 

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

discriminate

adj
  • Having the difference marked; distinguished by certain tokens. 

verb
  • To make decisions based on prejudice. 

  • To make distinctions. 

  • To set apart as being different; to mark as different; to separate from another by discerning differences; to distinguish. 

  • To treat or affect differently, depending on differences in traits. 

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