Block vs Serene

Block

name

  • An English surname 

  • A Jewish surname 

  • A surname from German 

  • A surname. 

  • A surname from Dutch 

Serene

name

  • A female given name from English. A rare variant of Serena. 

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