BOB vs protection

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. 

protection

noun
  • A means, such as a condom, of preventing pregnancy or sexually transmitted disease. 

  • Coverage. 

  • A means of keeping or remaining safe. 

  • The process of keeping (something or someone) safe. 

  • The state of being safe. 

  • An instance of a security token associated with a resource (such as a file). 

  • Restrictions on foreign competitors which limit their ability to compete with domestic producers of goods or services. 

  • Immunity from harm, obtained by illegal payments, as bribery or extortion. 

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