balmoral vs desert boot

balmoral

noun
  • An Oxford shoe. 

  • A Scottish cap with a flat top and a plume but no brim; a blue bonnet. 

  • A heavy walking shoe. 

  • A figured woollen petticoat. 

desert boot

noun
  • A type of laced ankle-high boots made of soft suede with a crepe sole 

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