ebony vs pistachio

ebony

noun
  • A tree that yields such wood. 

  • A black key on a piano or other keyboard instrument. 

  • A deep, dark black colour. 

  • A hard, dense, deep black wood from various subtropical and tropical trees, especially of the genus Diospyros. 

adj
  • Made of ebony wood. 

  • Dark-skinned; black; especially in reference to African-Americans. 

  • A deep, dark black colour. 

pistachio

noun
  • The nutlike fruit of this tree. 

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

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

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