gentleman vs tough

gentleman

noun
  • An effeminate or oversophisticated man. 

  • Any well-bred, well-mannered, or charming man. 

  • Any man. 

  • An amateur or dabbler in any field, particularly those of independent means. 

  • An amateur player, particularly one whose wealth permits him to forego payment. 

  • A man of gentle but not noble birth, particularly a man of means (originally ownership of property) who does not work for a living but has no official status in a peerage; (UK law) an armiferous man ranking below a knight. 

tough

noun
  • A person who obtains things by force; a thug or bully. 

intj
  • Used to indicate lack of sympathy 

adj
  • Harsh or severe. 

  • Difficult or demanding. 

  • Stubborn or persistent; capable of stubbornness or persistence. 

  • Strong and resilient; sturdy. 

  • Undergoing plastic deformation before breaking. 

  • Difficult to cut or chew. 

  • Rugged or physically hardy. 

  • Rowdy or rough. 

verb
  • To endure. 

  • To toughen. 

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