preceptor vs veterinary

preceptor

noun
  • A doctor who gives practical training to medical students, nurses etc. 

  • The head of a preceptory of Knights Templar. 

  • A teacher or tutor. 

veterinary

noun
  • A veterinary surgeon; a veterinarian. 

adj
  • Of or relating to the medical or surgical treatment of animals, especially domestic and farm animals. 

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