hazel vs pistachio

hazel

noun
  • A greenish-brown colour, the colour of a ripe hazelnut. 

  • The wood of a hazelnut tree. 

  • Freestone. 

  • The nut of the hazel tree. 

  • A tree or shrub of the genus Corylus, bearing edible nuts called hazelnuts or filberts. 

adj
  • Of a greenish-brown colour. (often used to refer to eye colour) 

pistachio

noun
  • A pale green colour, like that of a pistachio seed. 

  • The nutlike fruit of this tree. 

  • A deciduous tree (Pistacia vera) grown in parts of Asia for its drupaceous fruit. 

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