horticulture vs pomology

horticulture

noun
  • The art or science of cultivating gardens; gardening. 

  • Small-scale agriculture. 

pomology

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

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

  • A work or treatise written on this subject. 

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