clerk vs travelling salesman

clerk

noun
  • A salesclerk; a person who serves customers in a store or market. 

  • A law clerk. 

  • One who occupationally provides assistance by working with records, accounts, letters, etc.; an office worker. 

  • An employee at a hotel who deals with guests. 

  • A facilitator of a Quaker meeting for business affairs. 

verb
  • To act as a clerk, to perform the duties or functions of a clerk 

  • The law school graduate clerked for the supreme court judge for the summer. 

travelling salesman

noun
  • A man who travels, often within a certain territory, soliciting orders or selling goods. 

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