cobra lily vs nigger

cobra lily

noun
  • The plant Chasmanthe aethiopica. 

  • Any plant in the genus Arisaema spread in eastern Asia, eastern Africa and eastern North America 

  • A carnivorous plant native to northern California and southern Oregon, Darlingtonia californica 

nigger

noun
  • A fish, the luderick (Girella tricuspidata). 

  • A person of any kind (particularly as a term of abuse). 

  • A friend, particularly a fellow black person, often used as an informal term of address. 

  • A member of any typically dark-skinned people (now especially in combinations like prairie nigger or sand nigger). 

  • A person of black African descent who acts in an unapproved manner (whether positive or negative). 

  • A black person; a person of black African descent. 

verb
  • To perform in blackface. 

  • To behave as a stereotypical black person. 

  • To treat as inferior. 

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