Boo vs Willow

Boo

name
  • A community in Nacka, Stockholm, central Sweden. 

  • The Boko language. 

Willow

name
  • A census-designated place in Alaska 

  • A town in Wisconsin 

  • A female given name from English of modern usage. 

  • A town in Oklahoma 

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