balmoral vs gumboot

balmoral

noun
  • A figured woollen petticoat. 

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

  • A heavy walking shoe. 

  • An Oxford shoe. 

gumboot

noun
  • A chiton (kind of marine mollusc). 

  • Generic black tea. 

  • A type of boot made of rubber. 

  • A style of popular music traditionally associated with gold miners. 

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