Oma vs Pop

Oma

name
  • A female given name 

  • A town in Iron County, Wisconsin, United States. 

  • A township in Gêrzê County, Ngari, Tibet Autonomous Region, China. 

Pop

name
  • Traditional nickname for a stage doorman. 

noun
  • The body of college prefects. 

  • A popular classical music concert. 

  • A social club and debating society at Eton College. 

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