Zip vs hairless

Zip

noun

  • A Sicilian or Italian Mafioso who is relatively new to the United States. 

hairless

noun

  • An animal of a hairless breed. 

adj

  • Bald. 

  • Destitute of hair. 

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