blackness vs bootlip

blackness

noun
  • The experiences and culture of African-American people. 

  • The state of being of African descent. 

  • The quality of being evil or dismal. 

  • The state or quality of being black in colour. 

bootlip

noun
  • A black person. 

  • A large lip, especially of a black person. 

  • The lip at the top end of the shaft of a boot. 

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