loafer vs plimsoll

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. 

plimsoll

noun
  • A rubber-soled lace-up canvas shoe for sports or onboard ships; a precursor of trainers. 

  • The plimsoll symbol ⦵ (or o) that is used as a superscript in the notation of thermodynamics to indicate an arbitrarily chosen non-zero reference point. 

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