husbandry vs thremmatology

husbandry

noun
  • The occupation or work of a husbandman or farmer; the cultivation of crops and the raising of livestock; agriculture. 

  • The prudent management or conservation of resources. 

  • Techniques of animal care. 

  • Administration or management of day-to-day matters. 

thremmatology

noun
  • The field of breeding or propagating plants and animals. 

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