bod vs zoology

bod

noun
  • The body. 

  • A person. 

zoology

noun
  • A treatise on this science. 

  • The part of biology relating to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct. 

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