Ken vs Raven

Ken

name
  • A diminutive of the male given name Kenneth. 

  • Kensington in London (in combinations, e.g. South Ken, High Street Ken). 

  • A surname. 

Raven

name
  • A male given name 

  • A surname. 

  • A female given name from English for a girl with raven hair, used since the 1970s. 

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