shoemaker vs tanner

shoemaker

noun
  • The threadfish. 

  • A fish, Elagatis pinnulatis, the runner. 

  • A person who makes shoes 

tanner

noun
  • A type of commercially-fished crab, Chionoecetes bairdi or Chionoecetes opilio. 

  • A person whose occupation is to tan hides, or convert them into leather by the use of tan. 

  • A former British coin worth six old pence. 

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