boat shoe vs sneaker

boat shoe

noun
  • A type of casual footwear resembling a loafer, originally designed to be worn aboard a boat, characterized by water-resistant hide, soles designed to improve hold on wet deck of the boat and side lacing. 

sneaker

noun
  • An athletic shoe with a soft, rubber sole. A trainer. 

  • A sneaker male. 

  • One who sneaks. 

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