nig-nog vs zot

nig-nog

noun
  • A person of color, especially, a black person. 

  • A foolish person; hence, a raw and unskilled recruit. 

zot

noun
  • A black person. 

  • An anteater. 

verb
  • To zap, kill, or destroy. 

intj
  • The characteristic sound made by an anteater's tongue or by lightning. 

How often have the words nig-nog and zot occurred in a corpus of books? (source: Google Ngram Viewer )