loafer vs sneaker

loafer

noun
  • A shoe with no laces, resembling a moccasin. 

  • An idle person. 

  • A wolf, especially a grey or timber wolf. 

verb
  • To loaf around; to be idle. 

sneaker

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

  • A sneaker male. 

  • One who sneaks. 

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