cultivar vs peculiarity

cultivar

noun
  • A cultivated (not necessarily botanical) variety of a plant species or hybrid of two species. 

peculiarity

noun
  • That which is peculiar; a special and distinctive characteristic or habit; particularity. 

  • Exclusive possession or right. 

  • The quality or state of being peculiar; individuality; singularity. 

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