Emerald vs Sapphire

Emerald

name

  • A female given name from English. 

  • The Rural Municipality of Emerald No. 277, a rural municipality in eastern Saskatchewan, Canada. 

  • A town in Queensland, Australia. 

Sapphire

name

  • A female given name from English from the precious stone. 

noun

  • A stereotype of an aggressive and domineering black woman. 

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