surgical gown vs tog

surgical gown

noun
  • A protective plastic gown worn by a surgeon when performing surgery. 

tog

noun
  • A cloak. 

  • 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 

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

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