corvid vs ebony

corvid

adj
  • Pertaining to or resembling the Corvidae. 

noun
  • A member of the bird family Corvidae, including crows, ravens, jays, choughs, treepies etc. 

ebony

adj
  • A deep, dark black colour. 

  • Made of ebony wood. 

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

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

  • A tree that yields such wood. 

  • A deep, dark black colour. 

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

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