loafer vs spikes

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. 

spikes

noun
  • A pair of athletic shoes equipped with spikes on the sole and heel for better traction. 

  • Synonym of spike strip 

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