Armada vs Cobalt

Armada

name

  • A village in Michigan. 

  • The Spanish Armada which sailed against England in 1588. 

Cobalt

name

  • A village in Connecticut 

  • A town in Ontario. 

  • An unincorporated community in Idaho. 

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