parka vs tog

parka

noun
  • A long jacket with a hood which protects the wearer against rain and wind. 

tog

noun
  • A coat. 

  • A unit of thermal resistance, being ten times the temperature difference (in °C) between the two surfaces of a material when the flow of heat is equal to one watt per square metre 

  • A cloak. 

verb
  • To dress (often with up or out). 

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