broken-down vs tough

broken-down

adj
  • Ruined in character or strength. 

  • Not properly maintained; neglected. 

  • Which has broken down and, as a result, is no longer in working order. 

tough

adj
  • Rugged or physically hardy. 

  • 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. 

  • Rowdy or rough. 

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

intj
  • Used to indicate lack of sympathy 

verb
  • To endure. 

  • To toughen. 

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