bootlip vs spearchucker

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. 

spearchucker

noun

  • A black (African or African-American) person. 

  • An agitator. 

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