professor vs tenderfoot

professor

noun
  • The most senior rank for an academic at a university or similar institution, informally also known as "full professor." 

  • A teacher or faculty member at a college or university regardless of formal rank. 

  • A pianist in a saloon, brothel, etc. 

  • The puppeteer who performs a Punch and Judy show; a Punchman. 

tenderfoot

noun
  • An inexperienced person; a novice. 

  • A newcomer or arriviste to the region in the American frontier (Old West and Wild West). 

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