Haroon vs Haroun

Haroon

name
  • A male given name from Arabic, variant of Harun, equivalent to English Aaron 

Haroun

name
  • the Daraawiish government. 

  • The leading figures of the Daraawiish (such as commanders, governors, representatives, judges etc.) considered collectively. 

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