Banning vs Portal

Banning

name

  • A city in Riverside County, California, United States. 

  • A surname. 

Portal

name

  • A ghost town in California. 

  • A surname. 

  • A municipality of North Dakota. 

  • A town in Georgia, United States. 

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