Ish vs Jazz

Ish

name

  • A diminutive of the female given name Ishani. 

  • A diminutive of the male given name Ishmael. 

Jazz

name

  • A diminutive of the female given name Jasmine. 

  • A diminutive of the male given name James. 

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