blackamoor vs shitskin

blackamoor

noun
  • A stylized Negro. 

  • A blackamoor slave, a blackamoor servant; and hence any slave, servant, inferior, or child. 

shitskin

noun
  • A person with dark-coloured skin. 

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