Block vs Ish

Block

name

  • An English surname 

  • A Jewish surname 

  • A surname from German 

  • A surname. 

  • A surname from Dutch 

Ish

name

  • A diminutive of the male given name Ishmael. 

  • A diminutive of the female given name Ishani. 

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