cultivar vs kin

cultivar

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

kin

noun
  • Race; family; breed; kind. 

  • Relationship; same-bloodedness or affinity; near connection or alliance, as of those having common descent. 

  • Persons of the same race or family; kindred. 

  • One or more relatives, such as siblings or cousins, taken collectively. 

  • A fictional character who one deeply relates to. 

  • Someone who relates deeply to a certain fictional character. 

verb
  • To identify with; as in empathize or emotionally relate to a fictional character. 

adj
  • Related by blood or marriage, akin. Generally used in "kin to". 

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