BOB vs manhood

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. 

manhood

noun
  • The male genitalia, especially the penis. 

  • The self-concept of a man being with respect to his possession of the various qualities traditionally and ideally ascribed to manliness; a man's sense or view of himself as being more or less manly. 

  • He was a strapping youth poised on the brink of manhood. 

  • The state or condition of being a human being. 

  • The idealized nature of a man: all of the characteristics traditionally and ideally ascribed to manliness regarded collectively. 

  • The state or condition of being a man. 

  • All of the men of a given place, area, or any human subgroup (ethnicity, nation, race, religion, family, work crew or ship's crew, etc.) regarded collectively. 

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