delineation vs pomology

delineation

noun
  • The act of delineating; depiction. 

  • An image of the outline of an object. 

  • A graphic verbal description. 

pomology

noun
  • A work or treatise written on this subject. 

  • The study of pome fruit and of the cultivation of such fruit. 

  • The study of fruit in general and of the cultivation of fruit. 

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