Hero vs Ish

Hero

name
  • A female given name from Ancient Greek of English-speakers. 

  • Any of a number of legendary men and women, including the priestess loved by Leander. 

Ish

name
  • A diminutive of the female given name Ishani. 

  • A diminutive of the male given name Ishmael. 

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